Some people need to think. Nintendo has been around for 26 years and is still going strong. If I were to choose one to go it would be the PlayStation. As of June 2011 PlayStation Move has sold 8.8 Million. Even if they doubled that in 6 months it wouldn't be enough to mach Kinect's 18 Million. I don't know how Wii Motion Plus has done but with the release of Skyward Sword I'm sure the sales have gotten better.
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