The race to motion control has started to resemble an election campaign with both sides flinging mud at each other. Sony's head of R&D, and the man behind PlayStation Move, Dr. Richard Marks, has said the company decided not to pursue the technology used in Microsoft's Natal motion device because it didn't "enable as many new experiences" as Move's current tech. On The Engadget Show, Marks added the Natal tech would've added substantial cost with little benefit for Move.
"We worked closely with our game teams at what it would enable, and it enabled making the things we already did with EyeToy more robust, but it didn't really enable as many new experiences as what we were hoping it would enable, so it made the things we were already able to do a little bit more robust "“ which is good "“ but it adds a lot of cost and it didn't enable some of the other experiences we wanted to achieve," said Marks.
PlayStation Move and Xbox's Natal are both scheduled for fall 2010 releases.
Source: PlayStation LifeStyle