Sure, the allies had more advanced equipment in some areas (e.g. air power). On the other hand, what made the Sherman a good tank was never that it was individually better than a Tiger, but rather that there were more of them, and that they were easier to repair in the field. Basically, Sherman’s were production-line tanks, while Tigers were not. Looking at the production time of anything from submarines to Leaopards in NATO today is what makes me think that’s a bit ironic: It takes a loooong time to build stuff today.