They built better ones back then than we did, thankfully not in enough numbers. The Tiger for instance had bigger main gun with a flatter trajectory and much greater penetration, greater engagement range, better armor (our smaller tank rounds bounced off the front,side too in many cases), better optics, pretty good suspension and transmission still a gas burner, but that changed in 1943 with the Tiger II to an air cooled diesel producing 750 HP. For it's day it was a badass killer. Here is a comparison page if you are interested. After reading, you can decide which one you would rather have wrapped around your ass in battle.
World of tanks - comparing tanks side by side: M4A3E8 Sherman vs. Tiger I
tank-compare.com