Check out the physics modeling of older games like Panzer Commander and Panzer Elite. they both came out late 90s and outclass the tank game in AH by a fair margin. In both of those older games the vehicles behave like they weigh tonnes, not ounces. When the main gun is fired, or the tank is hit by incoming heavy weapons fire, the whole tank recoils and shakes.
Then go check out T34 vrs Tiger, a tank war sim released back in 2008, and be blown away by the physics, both of the vehicle and the environment. Im stretching a bit here based just on what the average AH gamer seems to want, but what I want is for AH to start bringing their tank game up to modern standards.