From what I understand from the videos and Matt's explanation, is that it moves like a normal fps, you just point to the border of the screen and when it reach a certain limit it starts turning, the only problem I saw was that it turns a little slow.
And the graphics do look better but not to the extent you made it seem, not that I really care, I <3 Metroid.
Edit:
IGN just put this up http://revolution.ign.com/articles/707/707486p1.html