A Nazi Germany without Hitler might be more effective, but I'd argue that it'd be quite a bit less evil. Let's say that Wonder Woman offs Hitler, Himmler, and few high-level Party and SS leaders. That leaves Goering, Speer, and the army in charge. Are these good, nice, wonderful men? No. But to paraphrase Margaret Thatcher, they are at least men we can deal with.bastardofmelbourne said:Kinda. Maybe. In a lot of ways, though, Hitler was his own worst enemy. It's debatable whether Nazi Germany would've been any less effective with him dead considering there were thirty-something plots to assassinate the guy, all coming from inside his own regime. And what do you do if the replacement Fuhrer is more inclined to ask for an armistice while he's still ahead? Now you've got a stable post-war Nazi Germany, continuing its shenanigans well into the 50s and 60s.
I think it's reasonable to point at the most virulently evil men and say they have to go without having to guess at what might happen ten or twenty years down the line via unknowable political decisions as yet unmade. Maybe a couple decades of rule by an un-Hitlered Nazi Germany is less bad than what actually went down when the Soviets came in. Maybe it falls apart like Francoist Spain and democracy comes to Poland and Eastern Europe in the 70's instead of the 90's. Maybe a weakened USSR can't flip China. Maybe the Cold War never happens. Maybe maybe maybe. No one is an oracle and usually all you can worry about is what's in front of you.