If not magic, what should it be called?I would prefer that Thor and the New Gods were never given the science fiction treatment. They're fantasy.
With Wonder Woman it should be mainly fantasy. I liked how she would visit different planets in the 1940s, but if that's made to fit in the current science fiction world of the Justice League, then they would have to change too much about those fantastic planets. I prefer to think that these planets exist on a supernatural plane and that's how Wonder Woman is able to visit them where science heroes with their rocketships cannot.
But I don't think so-called magic characters would use the word "magic" for what they do--except maybe Zatanna, but only for her stage magic act. The word has the wrong connotation. To the supernatural characters, what they do has its own logic, so it's not magic--it's just knowing how to use energies on another plane of existence. At the same time it shouldn't have to work according to known science.
I hate science fiction where they just make up a lot of ridiculous stuff that doesn't have any basis in science. But I'm fine with fantasy doing that, so long as it doesn't pretend to be science fiction.