This is incorrect, Sony won for their dual shock analog controller. The award is from the Video Game Technology Group. It was nominated by our internal group and considered along with the Nintendo D-Pad both of which were considered Emmy worthy for the development of the generation of controllers that followed the classic joysticks.
So Sony releases a press release with incorrect info and then it spreads quickly from there. Either way, it's a confusing situation. Due to the timelines involved, there's no reason that the Sixaxis or even the Wiimote won't go up for awards in the future. It'll be interesting to see if Sony revises the press release.