Hitler never looked or sounded like ANY other world leader.
He sounded like a maniac for almost 15 yrs before he rose to power. Only the willfully oblivious would have mistaken him for a responsible leader.
But when the choice was between siding with him or siding with Stalin there was no right choice.
Back in the thirties when radio and newsreels came into play. Leaders spoke a certain way, and used over-exaggerated theatrics when they spoke. Look at a newsreel of say, Huey Long speaking back in the early 30s. Not much difference in the delivery from Hitler. It was a different time back then.