[SR71A]

American armor, while initially out-gunned and out-classed in terms of armor protection was far more mechanically reliable, more manueverable and faster than German heavy tanks

There was also the critical factor of transport across the Atlantic (or Pacific). Marshall rejected heavy tank designs because he could get many more Sherman-based vehicles on a cargo/Liberty ship than heavier designs. Also, a singular chassis/motor set, as in the Sherman, also simplified maintenance and logistics to a great degree.

[PsyOp]

Also, a singular chassis/motor set, as in the Sherman, also simplified maintenance and logistics to a great degree.

Our fast turn-around rates for returning "knocked-out" tanks to battle had the Germans convinced that many more convoys were getting through their submarine screens.

I recall reading somewhere that Hitler considered his intelligence on our production capability suspect because they could not reconcile the numbers of destroyed tanks being reported by his field commanders with our production numbers and the constant arrival of "new" American tanks.

Amazing what a welding torch and fresh coat of paint can do.

[PsyOp]

"The Americans, as a race, are the foremost mechanics in the world. America, as a nation, has the greatest ability for mass production of machines. It therefore behooves us to devise methods of war which exploit our inherent superiority. We must fight the war by machines on the ground, and in the air, to the maximum of our ability, particularly in view of the fact that the two races left which we may have to fight are both poor mechanics but have ample manpower. While we have ample manpower, it is to valuable to be thrown away." - General George S. Patton, Jr., War As I Knew It, 1947.