Dude, Wolverine/X-Men movies don't make bank. WW beat all his movies in one try. That should show you her popularity.
Head of the class?! If he's your favorite just say that.
He's not, but the simple fact that he's been the consistent face that helped push the comic movie line speaks volumes. Panther selling tons doesn't change the fact that he was a literal unknown his movie. He'll you had mad bandwagon jumpers talking about going wakanda not knowing that wakanda wouldn't let them anywhere near it's gates. Wonder woman came along at a new rise of feminism. Not to say that it was the sole reason for its popularity(Ghostbusters disproves that) but it definitely had something to do with its success. Most people couldn't name 2 of her villains, on top of the fact that she hasn't had any sort of media run in the decades since her tv show sans justice league, where she shared billing with two incredibly popular characters.