The Germans fought the Soviets tooth and nail right up to the end. The Red Army lost 100,000 men to take Berlin. In the West, they surrendered in droves, because they realized the Western Allies would treat them much better than if they fell into Soviet hands.
Which is one of the reasons I’m doubtful the bomb would ever have been dropped on Germany even if it was developed prior to German capitulation. Europe is just too small. Berlin is what? 40 miles from pre-war Poland? Do you nuke Vienna, despite the fact that the Austrians did not bring Hitler to power?
Even Fulda is just 170 miles from France.
To put it in perspective, White Sands was 125 miles from Albuquerque. Given what we know today of fallout - does it seem wise to drop an atomic weapon in the heart of Europe?