Dx 10 , O.S. 64 Bits optimezed for, as behind the cover its written.
Basically, the framerate: On consoles, this game is limited to 30 fps. When the actions arrives, the games goes easily behind 22 fps in Xbox 360 and 19 on ps3.
I mean, they can record another video about Oblivion or Fallout 3, yes...but knowing PC players the game can be graphicly upgrade (HD textures, longer distance of view, etc)....I has no much sense to do a comparative of this kind as gamertrailers do.
Just look at
Gothic 3 with Community Patch or
STALKER Shadow of Chernobyl with Complete 2009 mod: the look much prettier & good than in its realesed day!

But in my modest opinion, "Xbox 360 vs WIndows PC" is like to say nothing: second one is an open hardware platform, so without any kind of specification, looks like video made for all "Eric Cartman"´s: too simple to have in consideration and too much generalized.

If Gothic 3 was released on...would it means nowdays PC gamers will not play the game without any graphic Upgrade? Because I willl upgrade if I can. And console version is always graphicly the same.
That is why I love PC!