The surprising thing about the Green Lantern win is that the movie did not live up to expectations at the box office. In fact, Green Lantern only brought in $116 million at the U.S. Box office, which was a lower box office take than Thor, Captain America, or X-Men: First Class brought in.
The People’s Choice Awards winners are selected by fan votes. The Favorite Movie Superhero award was revealed as part of an X-box tie-in, where scenes from Green Lantern were played. The award was immediately followed by an X-Box Kinect commercial which featured X-Men: First Class.