Your assumption and generalizations makes you just as guilty of the prejudice you are accusing a whole group of people of. Do some white people feel superior, I'm sure they do. Do most or all of them? I don't know all of them, but I am still going to say no.
In fact many of us who appear white have a lot of things going on genetically. My best friend in an interracial marriage has a daughter with blond hair and blue eyes who is half black. Their son is darker complected. None of them feel superior to the others. Racism serves no one of any ethnicity.