Out of curiosity, what's your win/loss ratio with Soviets in 2v2?
I'm not saying that Germans are massively OP. I do believe they have some advantages that make it a slippery uphill climb for Soviets in 2v2. You screw up at all and it's over against a half decent team.
Soviets 2v2 its about .628 currently on a 6 win streak
Germans 2v2 its about .548 currently -2 loss streak
Your statement about, if you screw if it's all over, is true for no matter what faction or mode of game you are playing. But I am telling you 100% that Soviets are not disadvantaged in 2v2.
Soviets have so many options it's not funny, just because conscript spam to T4 SU85's and then snipers is no longer working, doesn't mean that Germans are OP. It means you have to adapt. Use combined arms, Maxims, mortars, Clown Cars, Cons, Snipers, ZiS. Then tech to T34's and SU85's.
A safe option for Soviets in 2v2 is one player spams Cons and the other player makes a few Maxims and Zis AT Guns. Combine and work together and push the German cut offs and the fuels and plant mines. One fast tech to T70 the other waits a little longer and makes T4 and gets SU85's and Snipers.
This isn't hard to do, knowing you will ALWAYS be facing Panzer IV's from Germans as they can not possibly wait until T4 for Panthers as they will be over run before then.