mmmmmm 2 guys in this thread already answered this
NATAL HAVE A GREATER DEPTH PERCEPTION, why do you thinks it has 2 cameras instead of one?
People have 2 eyes thats why we can perceive masterfully depth
Depth perception is the visual ability to perceive the world in three dimensions
Natal´s sensation of depth use binocular cues (which is far more accurate) while PSeye have monocular cues.
Its like natal have all the goods of the monocular cues (perpective, relative size, familiar size, aerial perspective, motion parallax, accommodation, occlusion, etc.), all that plus convergence and stereopsis (binocular disparity) that its greater because by using two images of the same scene obtained from slightly different angles, it is possible to triangulate the distance to an object with a high degree of accuracy. If an object is far away, the disparity of that image falling on both retinas will be small. If the object is close or near, the disparity will be large.
Natal can track your body in a 3d enviroment more accurate because it has more information coming to the hardware to proccess.