It's not fake, but it's also indicative of a beta that's going out to masses in any capacity. Private tests happen all the time using the public LIVE servers.
For what it's worth, a second picture from the source is up now, and shows the player's Gamertag. "Yahtzee DvN". It's legit.
http://live.xbox.com/en-US/...
(Disclaimer: WYK did not submit this article to N4G).
For your information, 'we' were not under an embargo for this. Had we been, this would not have been posted. An embargo is an agreement between two parties, and one wasn't in place.
Rockstar provided the trailer to certain sites so they could run with it on Monday, and this particular outlet who leaked it chose not to wait. We merely saw the trailer, reported on it, and that's all -- we did...
The Heavenly Sword tech is very likely (and is, IIRC)owned by Sony, just like the IP itself, thus making multiplatform use impossible.
Honestly, Ninja Theory has made a game using UE3 that blows Heavenly Sword's graphics out of the water.
Thanks for using (and not crediting) our image!