'Supergirl' scales back its titular hero's abilities, never letting her reach full power

'Supergirl' wins with its leading actress, focus on Kara storyline, fight scenes, and production/set/make-up design, but fails in its script and supporting characters.

AP:Last year's Superman ended with Iggy Pop singing "Because I'm a punk rocker, yes I am" — an ironic coda for a superlatively square hero. But it rings straightforwardly true for…