It doesn't perform well against anything above a medium. I don't think it is a call-in meta issue. THe call-in meta may lead to the unit not being built, but it still performs rather poorly as a TD.
Huh? Its just the other way around. The Su85 performs relatively better against heavies than against mediums, the JT of course excluded. 1 on 1, against a PIV, the outcome depends heavily on the terrain, it might be 50/50 overall. The Panther however will get the better of it virtually without fail. On the other hand, the Su 85 shines against the Tiger in particular, since the latter isnt usually fast enough to close the distance unless you mismicro (same with the KT), and in addition, Soviet T1/T4 synergises particularly well against the usually encountered Tiger/Pak combo.