Depends on the Sherman. The E8 with the high velocity 75mm could, with multiple rounds, knock a Tiger out of action. Not as spectacularly as a Tiger could do a Sherman, but out is out. Shermans in verious marks and mods were cranked out like "Carter's cranks out pills". Dr. Porsche's Tigers were not. And with close air support the airplanes could kill the Tigers so who needs a direct allied counterpart tank?
The allied side was blessed with a lot of spectacularly poor aircraft at the outset. The only things worse were armored and infantry vehicles. The Nazi's got a lot better a lot quicker on the armor and infantry equipment but did very little that was useful in air and at sea except for U boats. Thank goodness they did not have a balanced military focus that would have put advanced technology aircraft in operational use instead of puttzing around with them in development or trials organizations until it was too late (for them)