CrazyD: Big picture I pick the Sherman with the T-34 a very close second. Now if it's tank versus tank in a shoot out with any given variable taken into account. I pick the German King Tiger hands down. The King Tiger had the best armor and was equiped with the outstanding 88mm L/71 calibers gun. In terms of armor and firepower, no tank of WWII was in it's class. If we were to say include a second place that may have stood some sort of fighting chance against the King Tiger. That tank would have to be the one of a kind, American T26E4-1 Super Pershing. The Super Pershing was a true oddity and was just an experimental piece the US rushed to Europe to see what a Pershing tank armed with the experimental T15E1 90mm L/73 calibers gun could do under combat conditions. This gun did have the ability to destroy all German heavies at long range frontally. That is with the exception of the King Tiger and Jagdtiger. If one were to simply go one gun tables and armor alone. It appears the T15E1 gun would have a fair chance against the King Tiger turret face and the Jagdtiger upper fighting compartment front face at medium and close range. But IMO no real chance against the upper front glacius at any range. The Super Pershing was some 11 tons heavier than your garden varity Pershing. This was mainly due to all the extra armor that was added to it. The Super Pershing would have been difficult for any heavy German piece to deal with frontally. How effective all that applique armor would have held up to a heaver caliber German gun is really up in the air though.