When the game was balanced (before brits), it was no big deal. I played 2on2 with BigZ long time ago as allies, after 10 games rank 90 too, then we never played again. But I know, you write always they are good enemies, when you won. And when we win, it was axis map or enemy was bad or 1 of them was drunken or something.
Why hate ? After 10 games in 4on4, your team will be between rank 5-60, it depends vs which teams you won. You have to lose many games, to be on position 90 only. Ok, in 4on4 random it takes more time than 10 games, to reach it. I admit, as allies, even rank 90 players can handle op stuff to win vs good axis teams, so, good performance with that win.
I don't really need the AT rounds vs vehicles, I only use them everytime versus infantry attacks. No good enemy will lose his light tank. If you got your light armor destroyed by mg, you will lose anyway in this game, even when they would take ap rounds out. As others said, it's a l2p thing.