The Tigerwolf may look vaguely similar to contemporary MBTs, such as the ubiquitous M1-series Abrams, but is in fact wrapped around a lot of design features and technology that are comlpetely alien to today's tanks.

For starters the crew is quite large, with a Commander, Driver, Gunner, TWO loaders, and an Engineer. Many designers favor a smaller crew, usually adding an autoloader to eliminate the Loader from the crew (like in the Russian T-64 through 90, the French Leclerc, and the Chinese Type 85 through 99). Some concept designs even reduce the crew to 2!
However, there are a lot of problems with a smaller crew. First, autoloaders work at a painfully slow pace (14 seconds to reload in a T-72), which gives manual-loading tanks a huge rate-of-fire advantage (just 4 seconds in the M1A1 Abrams). Second, any crew members who get killed, wounded, etc., force the vehicle to retreat --- a crew of 4 can manage if they lose one man, and a larger crew would be even better off. Third, Less crew members means less men to conduct repairs, fight fires, etc., during a mission.
There's no autoloader either, as that only slows the ROF, requires smaller, less powerful and versitile ammo to be used, adds another complex, delicate set of moving parts to break, and only serves to expand the guantlet of things that can hurt you inside the vehicle.In fact, the Tigerwolf's main gun ammo is extremely large and heavy, and probably would break an autoloader --- it's would be an incredible feat of strength for a single Loader crewman to load in under 10 seconds.
The engineer is useful as well, because the large size of the Tigerwolf --- coupled with it's simple drivetrain (most modern tracked vehicles have a deceptively simple drivetrain) and small, flat engine (compred to a "Vee" or gas turbine) make for easy engine maintnance and repairs from inside the tank --- there's no need to abandon it if you lose a sparkplug while under small arms fire.

As for the armor, instead of using a large amount of steel and other metals, most of the Tigerwolf's armor is made up of thick panels and blocks of woven fabric Carbon 60 and 70 --- which are genarically known as "Fullerine".
Fullerine has ove 100 times the tensile strength of steel, it's 10's of times lighter, and theoretically could be manufactured quickly and inexpensively. Essentially, the Tigerwolf has a sort of "Super Kevlar" armor, but unlike current Kevlars (which are made of polimers or composites), fullerine does not have a molecular structure that distorts or melts under heat or pressure --- a single piece of this new type of armor can withstand MANY direct hits from rounds with tank-killing power, KE and CE alike.
And because it's so light, the large amounts of Fullerine give the Tigerwolf armor that is not only hundreds of times stronger than steel, but much thicker than on any current or projected tank. Even though it's much larger than an M1A1 Abrams, the Mk.75 Tigerwolf is over 30% lighter, and can swim over water obstacles, rather than slog though on the bottom. And because it floats, there are no depths that it cannot cross.
Also important is it's low ground pressure, stemming from it's low 40-ton weight, super-wide tracks, low height, and enourmous horizontal size --- it has the ground pessure of a "Light Track" vehicle, like the M113 Gavin. This is important because almost half the world's surface is closed to heavy tracks (again, the M1A1 Abrams), due to thier height, ground pressure, and high centers of gravity.
The Tigerwolf can directly cut across many areas that no existing or projected MBT will ever be able to --- not to mention traverse certain terrain features, such as bridges and paved roads, without damaging them.

It is said that the most important part of a Tank is it's engine. If it breaks down too easily or can't get you going fast enough, you're as good as dead. Current piston engines (like the V-12s on T-72s and Leopard 2s) do not give as much power, torque, or revs as Gas Turbines, and are very noisy (compromising surprise), while Gas Turbines (Swedish Strv 103, US M1-series Abrams, and most Russian T-80's) are notorious gas-guzzlers, easily ingest too much dust of other foriegn matter (which suffocates them), and spew out searing hot exhaust --- the rear horizontal exhaust of the M1 prevents friendly troop from following it, while the T-80's vertical exhaust is an indicator of it's position (via thermal imaging that today's tanks use), even at great distances. So, if both of these engines are lemons, then what does the Tigerwolf have?
The Tigerwolf MBT uses a 5-liter Wankel "Pistonless" Rotary Engine, a type of engine known for being both quiet and powerful. As a Mazda 1.3 liter single-rotor Wankel almost effortlessly produces the power (and efficiency) of much higher displacement V-8's (more than 215hp), a supercharged 5-liter 3-rotor Wankel could produce over 2000hp without much trouble.
It would also have greater fuel-efficiency, in the order of a 2-4 miles-per-gallon (versus a gallon-per-mile in the M1's). Coupled with the lower tonnage to propel, the Tigerwolf has well over twice the range of the M1, with the same fuel capacity. So, the Tigerwolf can be used to attack deep inside enemy territory, or operate at the same ranges as contemporary tanks, with much greater loiter time and freedom of movement.
As the Tigerwolf has 40% more power and torque than the M1, and weighs 30% less, it is 40% faster and could probably accelerate as quickly as a Humvee. This would make contemporary tanks very hard-pressed to cut-off a Tigerwolf, and no current or projected tanks could ever hope to pursue a Tigerwolf.
Other advantages offered by the powerpack include a small number of moving parts, extremely low vibration and ocillation (inherent to Wankel Rotaries; not in piston engines), low heat emissions (less than in 700+ degree piston engines, or 1500+ degrees in Gas Turbines), a very small, flat, light engine block, and stonger individual components than in any current or projected tank engine, and a 5-speed AT, to take advantage of the high engine output.

All tanks require high firepower, and the Mk.75 Tigerwolf has plenty of it. The large size of the Tigerwolf's hull and turret enables a heavier-caliber howitzer to be used than on any tank currently in service --- a 145mm Smooth-Bore Howitzer. Because the German-designed M256 120mm smoothbore (M1A1, M1A2, Leopard 2, etc.) has a 40% larger punch than the British-designed M67 105mm Rifled-bore (the standard to which ALL other tank guns are judged --- used on too many tanks to list), the Tigerwolf's gun probaly has at least 20% more punch than the M256 --- enough to outrange any of today's tank guns, with enough penetration to destroy an M1A1 from well beyond it's maximum gun range.
It can also superelevate lower than any current tank gun (allowing the Tigerwolf to hit any current tank from above it's Max. evevation), and higher than any current tank (resulting in the reverse of above). Because the Max. elevation is so high, it is also possible to produce indirect fire as well, much like a Self-Propoelled Howitzer would (though with a lower vareiety of ranges and angles).
The real driving force of The Tigerwolf's fire power, however, is not so much the main gun as much as it's ammunition. *That's a whole story in itself, which I will cover in a later post*
The Co-Axial MachineGun (COAX) fires 7x50mm rifle rounds, which combine the low cost and recoil of the 5.56x45mm NATO round, with the accuracy and penetration of the 7.62x51mm NATO round. 7mm rounds would also have a smaller casing daimeter than a 7.62mm round, which when coupled with significantly larger magazines and canisters, means the Tigerwolf totes one hell of a lot of MG ammo. As such, it is unlikely that a Tigerwolf will have to resupply MG ammo during a battle, and may even have thousands of rounds to spare --- if it is supporting friendly troops, the Tigerwolf may be able to spare a few thousand rounds for them.
The Auxillary MG on the roof (used by the one of the Loaders) uses the same 7mm ammo.
Other targets may require a bigger gun than the MGs, but the Main Gun may not be adequate (it may even be overkill). To dispose of these, the Tigerwolf uses a 20mm autocannon (not pictured), instead of a Heavy MG. The problem with Heavy MGs, such as the .50cal (or 12.7x99mm, if you prefer the metric system) M2HB, is that even though they remain effective against troops, light armor, unarmored vehicles, and choppers, they are now useless in thier original role --- the lack the range, penetration, and shell velocity to sufficiently fend off marauding Fixed-Wing aircraft. HMGs cannot throw explosive shells that are effective against said targets, either. Defeating them requires an autocannon.
Having thier own personal 20mm AA guns, tanks have less reliance on aircraft, SPAAGs, and SPSAMs for thier air defence, and 20mm shells are also effective on choppers, light armor, and soft targets (like exposed INFANTRY!), giving the AA gun a lot of utility. In fact, it could be used to clear out buildings that the 7mm MG cannot penetrate, and the main gun would needlessly flatten.
The Tigerwolf also has several smoke mortars, as even in the 21st century battlefield requires the ability to create quick concealment.

A smooth ride and steady aim are achieved through hydropneumatic suspension and stabilization (versus the comparatively rougher torsion and hydraulics used in current and projected tanks) . The gun, turret, and hull each have thier own stabilization. While each of these are mechanically independant, they are balanced and co-ordinated via computer (which also feeds stability data to the gunnery computer, adjusting the GPS crosshairs in real time). This is unlike current tanks, whose ballistics comuters only react indirectly to the actual stability of the vehicle.
The heavy stabilization also gives the Tigerwolf a smoother ride, even at high speeds, greatly decreasing the strainand workload on the crew --- most tanks ride like bucking broncos at speed, making loading, map-reading, and keeping a steady hand on the controls very difficult.
The added stability also makes the vehicle stealthier, as well. All the rocking, bouncing, and ocillation created by a moving tank can give away it's position, or at least it's presence. The Tigerwolf, however, practically "floats" over terrain imperfections, mainaining a low noise profile.
The front and rear suspension can also be manually overridden and set to extremes in height. For example, in order to hit a target that is too low for the main gun alone to superelevate to, the rear supension may be raised, while the forward suspension is lowered. This allows the Tigerwolf to easily fire very low-angle shots, while at the same time keeping it's vulnerable underbelly covered. The inverse may be used to hit targets too high to normally hit, or to extend the reach or angle of indirect fire.
Most importantly, the Tigerwolf's stability allows for "firing-on-the-move" with very high accuracy, even at distant moving targets.

The high speed, long range, low profile, low noise, and low IR cross section all combine to form a vehicle with unprecedented potential in what most stategists consider the importand design element of a tank --- Surprise. The Tigerwolf can apporach, attack, and destroy any current MBT, then egress, without ever being detected. It can attack from distances any current tank gun cannot return fire from. It can also use long range indirect fire from behind cover, without ever entering the enemy's LOS.
Even without surprise, the Tigerwolf's mobility, defense, and firepower are still too great for current tanks to keep up with.

*I'm tired of chattering about this vehicle on my own. If you want to know anything else about the "T-Wolf", then post a comment.
Conversing is more fun than lecturing, anyway!*