I think you're in denial. The prime competitor to XBox jumps 10% from its 52 week high during the period of time that the XBox is announced. It's difficult to call that a coincidence.
And as noted elsewhere, the price started moving only 5 minutes into the presentation, way before anything of substance was announced.
There's no way a stock movement of that size had anything to do with the Xbox.
Anyway, take a look at this. http://www.bloomberg.com/news/2013-05-21/sony-jumps-on-repor...