Sony/MGM’s 22 Jump Street , starring Channing Tatum and Jonah Hill , and DreamWorks Animation/Fox’s How to Train Your Dragon 2 both shot out of the starting gate Friday, but the Jump Street sequel is currently enjoying a slight edge. Jump , the R-rated comedy about two bumbling undercover cops posing as college kids, appears headed for a $23-24 million opening day and should then go on to pass the $60 million mark for its opening weekend.