When ever I play against a German level 45 or higher I do expect them to go Opel Blitz which then automatically tells me I have about 20 mins (at most) to win the game (so take the whole map and have a lot of Anti tank).
To achieve this in 1v1 I typically go Shock rifle (why not go one of the guard commanders? I think button is stupid) I know I have not hope of getting an IS2 out so its all about the flame KV-8 and stealth AT guns. Early game 4 or 5 conscripts and shock troops if I ever float enough MP. Then a fast AT gun and then pretty much just KV-8s and SU-85s (if I have not taken out a tank or 2 before i can pump out a SU-85 I have probably lost). Generally I try to hit the trucks with my AT gun arty where ever I can because you cant afford to let them tick over.
Ways to fix the Truck issue is to reduce its bonus by about 25% at a guess and to limit it to only 2 on the field at any time. To fix the strafing run it needs its AOE to be made a bit smaller and lower its suppression rate.
