Well most stupid thing about the SU85 vs german armor is that SU85 comes at the same time or even faster then my Ostwind/P4 so the counter is up even before the unit.
Some say you can flank SU85 but in 2v2 its not possible due to AT nades and/or guards with button being everywhere.
Another great russian "tactic" in 2v2 is one guy spamming snipers in Clown cars, the other cons with later maxims and mortars and then both adds guards. It give you some map control in the first few minutes due to not so many cons but after that are fucked cuz you cant touch snipers in scoutcars and at nades+guards wont let you use any T2 vehicle. If you somehow manage to dig in and hold some point than heavy mortars and/or T70 spam kills you.
Btw I dunno if its intended or not but current SU are in 2v2 mostly played like allies in vCOH = infantry blob with snipers and button. The only diffence is that they need AT gun or SU85 to counter nearly everything germans have.
My exp from 2v2 (I dont play 1v1 at all) is that if you face decent opponent who (ab)use this shit you cant win unless you got very lucky with some random arty etc. Its sad