For me its Batman. And its because his one of the few superheros who does not have any superpowers. He faces any and all adversaries using hist wits and anything that is at his disposal. He got to where he is by working hard and striving to become the very best (He even has 12 masters degrees). He is the only known superhero to have a plan that beats all other Justice League heros. That is why in my opinion he is the most superd superhero of them all.