I think lex is a top because, 1) there's no way in hell he let Clark/superman top him lmao 2) the nature of his obsession with superman is that he needs to be better than him in anyway possible, he has an insane inferiority complex, I believe lex likes to compete and win, but he can't win superman cause he is cheating by being a super powered alien, so he hates him for it
Lex needs to feel in control over Clark physically and mentally(I strongly believe that could fix him) and I think this translates to him being a domtop daddy lol
Finally 3) I don't need a reason, I just want him to top cause he's my favorite and because Clark is such a pillow princess service sub baby that was born to get pregnant with lex's babies













