PS3 started off the winner since that was the first console I purchased. Mainly as a media extender but then I got sick and tired of video playback stopping because of an unknown network error. The specs were good, but I'm not a fan on the controller, and the interface could be a little better (at least it's still very responsive and easy to navigate).
Microsoft has the upper hand already since their console will no doubt integrate with Windows, SkyDrive, etc and then services like Xbox Music, Gamerscores, LIVE Gold will probably carry across to keep one-sided players loyal.
Sony needed to sell Bluray at a loss in the PS3 so that the format would win overall against HD-DVD. It definitely crossed my mind when choosing, yet all these years later we only have about 10 BluRay movies in the house. In some ways they need to have the better specs ni order to compete. Since Sony make TV's they know better how far away mainstream 4K is. 2013 seems too early for 4K but then 2023 would be way too late. Adding 4K in a refresher 'slim' model in a few years would seem to be a better choice, ignoring the upset fans who already purchased a console on day one. If the PS4 makes more people buy Sony TV's then they'd also be pretty happy. Then Sony also has it's own music and mobile phone division to link up with.