Being a superhero is all about making it your life's goal to save and protect innocent people and stop criminals from getting away with anything, not having superpowers. Batman and Iron Man don't have superpowers, but they're still superheroes because they make up for it with several metric fucktons of highly advanced technology and fighting skill.
The only reason people think superhero = superpowers is because almost all superheroes are able to do what they do because of their powers.
The only reason people think superhero = superpowers is because almost all superheroes are able to do what they do because of their powers.