"It’s pretty well known that the Xbox One version of EA’s awesome Battlefield 4 is running at 720p on the system, which puts it at quite the graphical disadvantage when compared to the PC and even the PS4.
Microsoft is sponsoring a “Battlefield Showdown” tournament of sorts, and is promoting it on the official Xbox Youtube channel with an Xbox-branded trailer for the showdown. The problem? The game footage (despite having an Xbox logo watermarked on it), isn’t from the Xbox 360 or the Xbox One. It’s from the PC.
How do we know? The upper right corner shows the “Backspace” button to access Battlelog. The Xbox One and Xbox 360 versions don’t show the backspace key there.
Shame on you MS."
Source http://furiousfanboys.com/2013/11/microsoft-uses-pc-battlefield-4-footage-in-xbox-promo/
