As far as a Superman movie it's okey, it's not a good movie by any stretch, and the complete disregard for the laws of physics in a movie that's otherwise supposed to be a "grounded" retelling of Superman is a bit jarring. BUT, Superman is a story that will never make a truly amazing movie, I just don't think you can really do that much with a character that ethically perfect. Snyder tried to challenge that idea by making Superman conflicted about his powers, and the good and bad they do, but then he ran into completely going against what the already established character is. At least Man of Steel has some suitably epic visuals and great casting, the action is kind of meh (hard to feel the intensity of a fight when both participants are unhurt-able immortals), but again that's more a problem with the core of the character than the quality of the film.