@lukeweizer: I've never believed that sticks are inherently better either; that's just what the community tends to say as a whole (although probably less so now).
Well, speaking in terms of pure kinesiology, doing motions on a dpad relies entirely on your thumb whereas joystick movements can incorporate your fingers, wrist, elbow, shoulders, and even back and waist. It's a minute difference though, and in all honesty we really should be playing on Hitboxes anyways.
I saw someone using one of those at PAX Prime last year! It completely boggled my mind. Is it considered better than a Stick? Or just some different?