He can fly and is as strong as Superman but, unlike Clark Kent, Goofy doesn't need to use glasses to hide his superhero identity (I hate wearing glasses, I have been wearing it for 22 years!) Still, he is incapable of being recognized because of his inconspicuous face.
Supergoof has the most well-designed costume of all superheroes, in an emergency he only has to undo two buttons and thus he is free to do what he needs to do.
Besides, Supergoof doesn't have to pay his bills and doesn't have to share his girlfriend with Murilo and Tomas... which is a very distressing thought.
Supergoof has to eat chocolate coated peanuts to get his superpowers, but this hard work has its rewards, he is the most effective superhero ever created.