The answer is yes, a lot of design flaws in the Sherman in the first couple years were field repaired by their own crews and such improvements and suggestions were rolled into production over that time. On D-Day the Sherman.
If you aren't counting variants like the 8 or Jumbo the effective armor on the front of the Sherman stayed around 90-100mm which angled at 30 degrees was sufficient to bounce tiger rounds according to this book:
https://ospreypublishing.com/tiger-1-heavy-tank-1942-45-pb which is quoting a kraut military analyst from the war.
And for a panther to penetrate it would need to be in the 150 meters range in a similar situation.
All things considered the Sherman was equal to if not better than German armor it encountered in France. The reason you don't hear that bidbit about the Tiger gun is because the allies only encountered one crewed Tiger tank in the west. (Tiger II's however they saw in mild numbers)
As an added bonus it didn't have a shot trap like most of the early panther models did, which spelled doom for the poor krauts.
From a combat effectiveness standpoint the sherman served just as it was intended, but from a production, tooling, cost, repair, and all that other industrial jazz point of view it was leagues superior to any other tank.
On its own it wouldn't have won the war though, american doctrine was much more flexible. Close Air Support anti-tank rockets and the like were what but enemy tank crews in the graveyard, tank for tank comparisons in a fight are primitive ways of thinking in this case, as we've seen, armored wonderweapons with big guns don't win the fight.
Thankfully the sherman's service in the war ended at the same time it became completely obsolete.