What we see now is the result of Germany having been on a war footing for over 4 years. Had Hitler held off until say 1945, who knows how many potential U-Boats and tanks he likely would have given up in favor of capital ships?
The vaunted German technological edge was a myth. The Allies particularly the British, were miles ahead of the Germans in electronics. The Germans relied on captured French plant and technicians for their electronics. Can we say “proximity fuse?” Yes, we can. But not the Germans.
Sure, there were some developments the Germans had like the schnorkel, but for every German development there was an Allied one, like the bathythermograph. That mouthful of a word allowed American subs to find and dive under a thermal layer that reflected Japanese sonar.
The real issue for the Germans wasn’t technology, it was access to raw materials and production facilities to make enough weapons.
Last point, lest I forget:
Atom Bombs
I rest my case.