We did overwhelm the germans with quantity. We did not have a "heavy" tank with a big gun. The Sherman (M4 I think) was a medium tank and the original gun was a low velocity 75mm. The Germans had the big Tigers and Panthers that were 15-20 tons heavier at least and started using the high velocity 88mm gun. On the plus side the shermans were faster It think and could traverse the turrents faster. The german tanks traversed the turrent slower so a sherman could circle one and stay ahead of the gun if one on one, I have read.
On the other hand, we built shermans to a standard design on an assembly line at a much higher pace than the germans. I think I read in a recent article that we produced about 10 times as many.
Another big diffeence in quantity that was even more obvious and effective was in trucks and other transport. We had trucks of all sizes (the jeep was classed as a 1/4 ton truck), in huge quantities and we had people to driThey ve them.
I recently read a book that the German Army relied mostly on horse transport. The mobile divisions had to send soldiers to driving school to train them. Apparently in prewar germany, most people did not have cars. But the book described how artilliary and supplies was mostly horse drawn. They could not move nearly as fast and they had to carry supplies for the animals.
So yes we did overwhelm them with quantity and maybe one on one was not as powerful or as effective, but we kept the stuff running, recovered dmaged stuff and did it.