The Sherman was a good tank but not in the same league as the T-34 or the Mark V or the Mark VI. Excellent roadability, reliable engine, drivetrain, tracks - but tall profile, low powered main gun, burned like a torch when hit.
“burned like a torch when hit.”
The English got loads of them before the US entered the war. The Germans immediately named them “Tommy cookers”.
The German tanks were designed to knock out other tanks. The Shermans were designed to kill infantry, and they did it very effectively.