Cling to that Cell-based PlayStation 2 emulator patent all you want, but Sony director of hardware marketing John Koller has some disparaging words for those wanting Shadow the Colossus to one day work one the latest hardware. PS2 backwards compatibility "is not coming back, so let me put that on the table," he told Ars Technica, soon after reaffirming, "that won't be returning." Apparently people have been buying the PS3 not for PS2 titles but for the newest games and Blu-ray movies -- and given PS2's continued dominanc