>>149168700 (OP)You're asking the wrong questions. The question is why don't the others have enduring appeal?
>HulkNot humanized enough, anger is a negative emotion.
>Fantastic FourGroup dynamic sucks.
>WolverineToo rough and antisocial. He's my personal fav though.
>Green ArrowArchers suck.
>Green LanternRing powers are gay. The ring is doing all the work.
>SpectreHis alter ego is dead.
>Why?All in all, you need a hero who feels human, empathetic, has an alter ego people can relate to, embodies strength and might, has virtue, a motto (with great power comes great responsibility, truth justice and the American way) and Batman in particular kept getting kickass movies that kept him in the public consciousness and has a color scheme of black and yellow that people like putting on cars.