Basically, with this technology, the slight tilt of my head would actually enhance my ability to see, instead of just making me look like a doofus.
Except that this guy is proposing a different function altogether. He's talking about matching the in game perspective to your real world perspective. In order for your slight head movement to make any noticeable change in your perspective, you're already abandoning this idea of creating a virtual window for just a gimmicky alternative to some other motion that can be done just as easily (if not easier) with the wii remote or nunchuck.
