It's said Warner is expecting a $90 million weekend for "Man of Steel", which is probably a lowball estimate. The Box Office Mojo estimate is about $140 million.
Right now, MOS is at 58% on Rotten Tomatoes. That's not good. It probably won't affect the opening weekend, but will it affect word of mouth and the "walk up" crowd? I'd think it would. Reviews may not mean much individually, but so many of the reviews (even a few of the good reviews) say basically the same thing: the movie is just too somber and joyless, without the wit or charm you'd expect from a Superman movie. No fun. Batman is supposed to brood and be dark, not Superman.