Dude for the last time, the T-34 had far superior mobilty. The T-34 could go 53 KPH and the panzer III could only go 40 KPH, also the T-34 had an astounding range of 400 kilometers whereas the Panzer III had one of 155 kilometers. Also the ground presssure of the the panzer III was 13-15 punds per square inch (depending on the model) and the T-34's was a mere 9.1 pounds per square inch. See, there are the numbers. The panzer III was good for it's time, that's true, but it was far too small to be developed far, whereas the sherman, the T-34, and the Panzer IV were not. oh and just one other thing, the panzer three did have the problem that it's armor was too spread around with armor on it's back and sides being in some cases as thick as it's frontal armor, which just doesn't offer combat value commiserate to its wait.