STARRING THE UNDISPUTED King of Summer, Christian Bale, and with the former King of Summer, Johnny Depp, “Public Enemies” will catch a lot of people’s eyes. The question is whether it will actually get butts on seats. Based on the true story of charismatic bank robber John Dillinger, played by Depp, the trailer offers an “Untouchables” vibe from the first moment (down to the trench coats and hats). Bale, single-minded as always, plays the FBI agent who takes down the bad man. It sounds promising, and we’re psyched to see Michael Mann take the director’s chair, but the trailer doesn’t quite live up to the headlines. The firing Tommy-guns and racing model-Ts seem a little too familiar, and, after all, we already know how the story ends. Since there are no special effects to necessitate big-screen viewing, one could easily envision audiences waiting for the Blu-ray come Thanksgiving. Despite its plumb opening date, we fear that “Public Enemies” will disappoint.