I just rewatch that game, named it beatfoxybuthebeatme , the kv2 is no uneffective it just the cost, also flgator moved up his at gun at worst time and u happen to attack right then so it was rape fest. I normally go str8 for pnz4 but for some reason went with mortar halftrack which I think only help me marginally. That was a game where if it was not vp I think your team would have won because you whooped my shit and my allies were just beating the other 2 slightly.
I still feel the kv2 is overpriced. Sure on a narrow maps where the turret is mostly pointing foward it can be useful. If the tank ai knew to traverse instead of moving its turret in most instances it could target faster. The su122 fire same shell (i think), cost 150 less, is faster mover, fires faster and doesn't have super slow turret. By itself it might be more vunerable but the extra 150 means might mean reinforcing my infantry to fight with the su122.
I agree about munitions thing and street fighting. I normally only have enough munitions to use that stuff once or twice then I am going to be out for most of the remainder of game.