THE BEST SUPER HERO OF MARVEL: HULK.
Here is why: When even the Gods (Thor and all of Asgard) are afraid of Hulk, there is nothing stronger that can defeat him in the universe.
When Hulk is angry, you don’t flee the city, the state or the country, you get the Fu__ out of the planet. Because he will jump around to get to you and beat the shit out of you.
THE BEST SUPER HERO OF DC: SUPERMAN.
A true born Superhero. Clark Kent is his mask to hide his true identity.