The Best Buy store near my house set up a demo unit about a week ago, so I saw it for myself. It is a genuine 3D experience if you ask me. In fact, I'd say it's the best artificial 3D out there.
If you want to know, I played PilotWings. This was the only accessible software on the system, but it did a great job at showing off the system's capability. Truth be told, I prefer the depth effect, it really adds to the gameplay. I also discovered the root of my minor "3D deficiency" and found my comfort level on the 3D slider.