yes they have AT potential, but potential doesnt matter when you cant reach it because you get boned so hard in the early game by light vehicles. players would lose pretty much all skirmishes on the sides of the map in the earlyish mid game because they dont have AT support nearby, and they would have to spend a rather large amount of manpower on units that only excel at AT and not much else. basically you have no mobile counter to light vehicles other than the puma.
just give volks at nade.. at nade and pupchen should destroy stuart and thats it if not make puma lol! and if that would hapend.. for me they can keep all free buldings bonuses and vet5. Like poop said they got so many AT options that they dont needed shreks but dont give OKW non doc mg all factions must have weaknes