@ Arclyte
German steel and engineering was simply better than anything the Americans put out. Why do you think the US had to send wave after wave of tanks to take out German tanks(Who had inferior numbers)? It's because the Germans had superior weapons and technology.
Sorry, but tanks like the Tiger and Tiger 2 were ridiculous and over-engineered designs that hurt their war effort more than it helped. They should have listened to Guderian sooner and reverse engineered the T34. They eventually came out with the Panther, but like most over-hyped German weapons/tanks, even that was overly complex for an implement of war.
Germans were also on the defensive pretty much the entire time. Hiding in a treeline is a pretty huge advantage. WW2 wasn't a game of CoD, so padding their kill/death ratio while losing the war really doesn't matter.
Best tanks of the war were the IS-2, T34-85 and Panther. Shermans were infantry support tanks, and weren't meant to engage enemy armor. That's what our unopposed air force was for.