The Amazing Spider-Man 2 has an uncommon emotional warmth, but it muffs the CGI spectacle designed to suck up bucks at the worldwide omniplex. Kurt Loder says that's not the way superhero blockbusters are supposed to work. Andrew Garfield returns as Peter Parker, the nice guy with a sideline in superheroics. He and his love interest, Gwen Stacy (Emma Stone again), are just graduating from high school, and Peter is rethinking the promise he made to Gwen's late father to stay away from his daughter so as not to draw her into his dangerous superhero doings. Garfield and Stone, who've been a real-life item for a couple of years now, bring a nice romantic rhythm to their characters' relationship, Stone dispensing wry quippage and Garfield aw-shucksing in return. It would seem difficult not to like these two.