^You don't really "spam" t34-85s
But yeah, Guards Motor is one of the best commanders probably.
@RightNow: The Stug-E is OP, but it's probably the only OP thing Wehr has at the moment (Wehr is currently considered to be the weakest faction, which may surprise you since you're struggling so much as Allies). It's not too hard to counter though, AT nade + Guards, or preferably an AT gun will do the job. I agree that Allied AT is not as good as Axis AT, but it's not as bad as you seem to think it is.
PS: If you wanna win as Allies, play games as Axis. Play in the style that worked against you, and see how other players counter it. It's good to know your enemy.