Maybe, but then, Hercules, Ajax, Hector, Achilles, Perseus then (if you're religious) David, Samson, Moses, Noah and of course Jesus. All of them performed super-human feats. Does that make them "superheroes"? Of their day, sure. That's essentially what most of the bible and ancient writings are...stories of heroism or some tribe getting stomped in a massive war, and the tales of the heroes of that war.