All true jcpro.All true. Except, by the time the jet ME arrived, Germans were out of fuel and out of pilots. The V weapons were a technological leap, but the British rendered the V1 impotent by using polished Mustangs and massive AA fire. V2, while superior to anything, had short range and a guidance system only good enough to attack large urban areas. The electroboat U-Boats were a technological marvel. None of them were completed in time to make a difference. And even if they did, so what? Same story with tanks. Nazis had the best tanks, but they could never produce enough of them. The moment Hitler declare war on America, he sealed his faith. The German economy had no more chance against the American economic output than Japan.
And the Germans were working on the atomic bomb too, but thankfully, it was too late.