Would it really be marked "Only on Playstation"? BlazBlue didn't have that, but then that did have a 3DS version if that's the metric they're using. Though there's also UMvC3 that I recall didn't have it.
... Sony's use of "only on Playstation" gets to me more than anyone else's. Partially because it seemed to be recognized by Nintendo/Microsoft as a marketting ploy that was having less use with time, while they had been the company abstaining longest.