User blog comment:Gekkou30/Who is Crazier The Joker or Deadpool?/@comment-4770586-20140415143748

I'd say that the Joker is more insane; being (as said below) a psychopath. Deadpool, on the other hand is crazy too, but not quite to the level that Joker is. I just feel that he doesn't care what he says (being as it's his diologue that impart leaves some people to claim him insane). Also, Deadpool is more a Sociopath, with a psychopathic edge to him.

Although I must admit it would be interesting to see those two thrown into a room together and see how they'd interact.