My friend and I play against the computer, and when they used SU-85s, it killed infantry squads in 1-2 shots, even though it has 3 against infantry, and is a tank destroyer so it shouldn't be good against infantry.
Also, the Katysha, I don't think I'm spelling it right, is overpowered. Again, against the PC the Russian teams would spam them and devastate even tanks. If they do the same damage as a Calliope then nevermind. they just seem overpowered.
Lastly, for some reason the Katyshas launched right where my camouflaged Pak-38s were. There is no way they should have been able to know I was there.