My friend, there is almost too many to explain. M3 lee and a lighter panzer would just be a few
you seriously think a panzerII or panzerIII would have a chance against a t-34?
there was a reason they were replaced...you should look them up, very interesting reading.
the panzer iv was not a heavy tank...it was a medium tank...just like the t-34 and sherman...it weighed a couple of tons more than a panzer iii...the t-34 weighed more than both...and the sherman weighed more than the panzers and the t-34s.
you should go look at the stats so you can see for yourself that the panzer and t-34/85 are used a lot more than the tiger.