AUJ had competition from Jack Reacher, This is 40, The Guilt Trip and Monsters Inc 3D.
All of them made about 36 million combined.
DOS has had to compete with Anchorman, Hustle, Dinosaurs and Banks releasing/expanding, which will have a combined gross of 65+ million.
Unlike AUJ it does not have 2 big releases(Les Mis and Django) next week. Hope don't cost a dime