If someone created a female character with the same story she would be called Marie Sue. Suddenly a woman loses her parents and becomes a billionaire and uses the money to fight crime. They would s. ay thOne at is not realistic.

Yes, Superman is also Gary Stu. Since you have a problem with the Batman example, then I’ll use superman. Why do people tend to love characters like Gary Stu as Superman and hate female characters who are considered Marie Sue?

And why wouldn’t it be? Mangas sell more than comics. Animes are consumed all over the world. Why don’t they serve as an example?