Nazis make for better super-villains because at least they aim to be super or superior.  Communists ... are so unmentionable and unimpressive as individuals they by their own nature are not unique and thusly need to define themselves through others.  They aren't Lex Luther or The Joker hatching brilliant schemes as much as they are boring, common, petty thieves rationalizing their parasitism.

via Captain Capitalism: Why Nazis Make Better Super Villains Than Communists.