I hate the idea of limiting the number of heavy tanks. You end up with useless fuel, and vCoH Heavies used no fuel. If the enemy ends up with several heavies, then that is YOUR undoing.
Not always my friend.
A lot of games, the tiger rolls out and soviets are forced to retreat a bit.
Than that second tiger rolls out/elefant.
And than the shit begins, third tiger rolls out, second elefant, ..
It's not a matter of skill in 2v2's. It's not that because the opponent has 2 tigers, you played a bad game.