If by super you mean "fucking rich beyond all measure", then sure.
Not only that, but being only human while still taking on those that are much more than that (and keeping SUPERMAN in check) and beating them, he becomes a superhero. His super power is essentially his wit and resolve.
I mean come on, Mr. Terrific is a superhero for being the seventh most intelligent person in the D.C. Universe. If he's a superhero, then anyone is.
I think it's time to revive the chat in the Comic Book Group again....