It appears that the mutants of X-Men weren't as mighty as originally predicted. Box office estimates had the comic book caper grossing $57.5 million over the weekend, ranking it as the fourth-largest opening ever. Well, final figures are in, and the film pulled in $54.5 million — still spectacular, but now it's the sixth-biggest opening, behind The Lost World: Jurassic Park, Star Wars: Episode I, Mission: Impossible II, Toy Story 2 and Austin Powers: The Spy Who Shagged Me.