Dual or triple SU-85s with Mark Target can trade blows with a KT easily, and even with an Elefant if you get a bit of RNG.
Otherwise, for Elefants and Jagdtigers, yeah you kinda need T34/85s to flank them, but they are also vulnerable to AT guns, and Guards work wonder against them too thanks to Button. If you damage their engines, they are absolutely sitting ducks for anything, offmaps and artillery included.
Implying you mark target plane wont get shot out of the sky after 6 seconds of circling by all the mounted mgs that do AA.
Meanwhile my Quad HT cant even take out a single scout plane circling directly over it.