Avatar was just a fad because of the overhyped 3D at the time which was also a fad itself. Kind of funny though remembering it, this was during a time when even normies and leftists made fun of the movie for being woke with its cliched overly preachy story about natives vs colonizers, so maybe critics will be more generous this time.

Also I'm pretty sure superheroes sell more because they have decades of established fans, as well as international fame. This is like an indie game developer mad because Mario sells a lot.