FFXIII's 360 sales were like 1/5 of the PS3 sales. Still sold over a million though, so it was obviously worth it.
It would be reasonable to think that FFXV would skip the weakest console though since FFXIII had a lot of issues on the 360 as it was, and they would probably like to not have to limit the graphics to the capabilities of the 360.
EDIT: Also I just watched 2 seconds of the video expecting and obvious fake, but this is legit as ****, nobody would bother faking this.
It's probably a renamed Versus though.