As i see it this T3 rush is very situational.
At least on maps where fuel is in the far corners he CAN deny your fuel with heavy T0-T1 if you are doing that T3 rush.
If you have no fuel he can just skip T2 and puma and do whatever he wants.
He can even abuse T1 into P4 build if you dont have enough fuel.
My posts are not about balance but about L2p, how to counter etc.
Puma's don't allow you to do whatever you want. Almost all good soviet players will spam mines every were which are death for Puma's, and Puma's armor isn't small arms fire proof which means if you see one at around 25% health you can give it main gun destroyed if you shoot at it (which is part of the reason I fucking hate Quadmounts so much).
Playing as Ostheer this patch against Americans is a joke, playing against Soviets is an uphill battle the entire game. The fact that Ostheer has no vehicles it can rely on before T3 and the fact T3 comes so late compared to the other factions means that Ostheer's weakest point is at the mid game were he has to micro like crazy to keep his shit alive.
Late game how well Ostheer does depends on what heavy he has to call in and if he has a howitzer counter. Iv given up on using the LeFH because it just doesn't pack enough of a punch to be worth 2-3 infantry squads.