Superman is vulnerable to one, and only one, substance: kryptonite. He knows this. We know this. Lex Luthor knows this. Yet he has been disabled by kryptonite in every one of the movies. Does he think Lex Luthor would pull another stunt without a supply on hand? Why doesn't he take the most elementary precautions? How can a middle-aged bald man stab the Man of Steel with kryptonite?
Every era gets the superhero it deserves, or at least the one filmmakers think we want. For Mr. Singer that means a Superman who fights his foes in a scene that visually echoes the garden betrayal in "The Passion of the Christ" and even hangs in the air much as Jesus did on the cross. It's hard to see what the point is beyond the usual grandiosity that comes whenever B-movie material is pumped up with ambition and money. As he proved with his first two installments of "The X-Men" franchise, Mr. Singer likes to make important pop entertainments that trumpet their seriousness as loudly as they deploy their bangs. It's hard not to think that Superman isn't the only one here with a savior complex.More favorable: the Globe's Ty Burr and the Inq's Steven Rea.