@Raze
It is superior to PS eye in that is uses two (or is it three) cameras to track motion and depth.
The main strength of natal was that all (or most) of the image processing would be done on a chip(s) built into the camera and therefore not using the x360 core processors.
What it also means is that Sony can simply release a new PS eye with multiple cameras and with the experience they have with the current eye tweak the software to to do the same thing.
In many ways it was the chip on the camera that give natal it's strength.