Looks like this movie is going to tank unless the foreign box office can save it (unlikely).  At a budget of over 300 million, it would need at least that to break even and with these numbers (52M) opening it doesn't look like it will begin to have a chance.  Don't look for a sequel any time soon on this one, which is a shame because I think the sequel could be a much better movie than this was.  I agree with others on the board that it was burdened with the usual origin baggage and that can bog down a first installment.  I also think that superhero "burnout" is starting to set in with these movies.  An exception will be The Dark Knight Rises and (hopefully) Avengers.