A key difference: Hitler survived on battlefields where he could die a horrible death. Trump lacks the suffering and hardship required to understand what is at stake if he plays the fascist game badly. I think that is going to be a major reason in why Fascist America would lose in the long run, since it doesn’t value competency in any respect. Even the Nazis had some competencies, despite being evil dickheads.

Both of them staged a failed insurrection as well.