I saw “Supergirl” in IMAX. It wasn’t a “superhero movie” about saving the Earth through self-sacrifice as “justice” confronts “evil.” It was a coming-of-age story about saving oneself, Kara, as she struggles with her own trauma. Structurally, it feels less like “Mad Max: Fury Road” (2015), where everyone is driven purely by survival instinct beyond notions of good and evil, and more like The Good, the Bad and the Ugly (1966), where heroes, villains, and scoundrels all converge.