JLuke, you hit it on the head. On the low tier battles the game does appear to play like an arcade shoot and move, blow up the other guy and get blown up. But at the later tiers, tactics become important. Heck, even with my A-20, I would do what I could to track the guy, and then just run circles around him knowing his turret couldn't keep up with my speed.
Yeah Drum, they are lame tanks :P
The SU-100 can use an 85, 100, or 122 Pretty much the exact same cannons on the T-43. I haven't seen a 107 on any of the Soviet tanks or TD's I'm using. Maybe that's a cannon only the Soviet heavys get?