I just got my copy in today and after some frantic scouring for a CDKEY (yes, it requires a valid CDKEY) I can report that the only difference is video files. They are now in 640x480. So far thats the only difference I can spot. Models, Backgrounds and the like are all the same as the original BH2 PC Release. Everything is unlocked from the beginging including Tofu and Hunks missions.