Man of Steel- excellent hero and compelling villain with an excellent, consequence-ridden climax and visually stunning. Looks forward instead of back to a controversial extent, but I loved it.
Star Trek Into Darkness- excellent hero and compelling villain, but a somewhat lacking climax that doesn't really take any chances. Looks backwards and forwards, but the former suffers in the climax with repeated dialogue.
Iron Man 3- excellent, but still overly immature, hero with a competent but unimpressive villain, with a strong climax that makes the supporting cast a bit more impressive than the still wonderful lead. Clearly intelligent and subversive when dealing with cliches and tropes, but still suffers from a banal villainous plot.
I like all three, but I'm a sucker for character arcs and epic but personal conflicts, and I think Man of Steel had that in spades.