The T-34 was more capable (leaving out the lack of radio equipment) than most of the panzers employed by the germans, barring the Tiger, until the introduction of the Panther and King Tiger. Then, as it was with the western allies, sheer weight of numbers told.
If you consider a tank that can't travel capable. In June 1941 half a CORP was lost on the way to Dubno, not to enemy fire, but to wear and tear.
