Well the two fronts were very very different. We had to ship our tanks over, the USSR could roll them out of the factory and into battle. They also had a much larger battlefield - the USSR is HUUUGE. And Germany was strung out with such a long supply line.
The Sherman was the way for the US to go. The T-34 was the way for the USSR to go. But almost any tank commander will tell you their singular dream tank would be the Tiger.
I won’t argue with that. Just with the numbers. IMO the T-34 was a better tank, but you are right about the terrain, the disposition and the tactics.
Hitler’s mistake—invading Russia (didn’t he read Napoleon?) His second mistake Declaring war on the USA (Didn’t he remember WW I?) That being said—I don’t believe our muli-cultural, Global economy driven, nation could do it again. And if you think their will never be a WW III you do not understand history. The war will come—grim and terrible. Socrates said it best: “Only the dead have seen the end of war.”