Oh but thats easy to answer!
Exactly the same way soviets always had, together with PaK and gren support and a mine here and there.
I'm winning almost effortlessly 2v2s with T34s, because german players are still stuck in the last patch, thinking a single panther or tiger will fend off any number of advancing tanks.
Well, not the case anymore, 2 T34/76 are more effective then a single panther as well as they cost more, time to use superior mobility and range because relaying on armor and health alone isn't the "go to" way anymore.
Spamming panthers with no infantry AT support will guarantee you a loss, because numbers do matter now on the soviet side.
hm. Never spamming whithout support. I often used the p4 and pak 40 combo. This doesn't work anymore.