Yes:
1) He convinced cultural elites in the USA and western Europe that he was a good guy, that his evil ideology was the way of the future. To this very day communists infest university faculty, the MSM, and the Democratic Party.
2) He crafted an "inclusive" evil ideology; revolutionaries in South America, Africa, and east Asia readily adopted it as they never could have adopted Naziism. Hitler, with his sick fixation on "aryan" racial purity effectively limited the appeal of his ideology.
Stalin was a far more clever monster than Hitler; cleverness in a monster is a bad thing. QED.
Hitler had his supporters in the U.S. as well. And I see nothing in South America, Africa or Asia which suggests that they are in any way immune to the temptations of authoritarian fascism.