In MBT I made the experiance that from the 70s to the early 80s and the massive increase of TI equipment in western forces the Red Army is indeed a formidable force. Though the training level is not too good you get decent hits with your equipment being close to always being the most modern on the battlefield.
Though against massive unsuported tank rushes ATGM (especially TOW) can be a real killer.
I love playing small '78 campaigns with, playing a company of first tier T-80s... It's amazing how the obsolete 90mm and non SABOT 105mm rounds bounce of the forward armor. (Well except those from the British and German guns...)
But well you have loads of arty to deal with that...
