His baldness is not the issue. And muscles? Where did anyone mention that? The issue is that Lex is not just some maniacal sociopath like the Joker, he's a shrewd businessman who wants the same thing Superman wants: a better world. It just so happens he thinks that world should be one where he has a lot of control over it and there isn't some overpowered alien running around with his finger on the button. Maybe this Lex has these qualities, it was just a trailer after all. But all I saw there was 'Lex Joker'.