Okay, no one's mentioned it yet so I will.
Is not the PS3 slower than the 360 by a lot in terms of loading screens and downloads? I love it, and the exclusive games on it, and the free online multiplayer gives it a huge edge for me over my now single-player-only Xbox 360 (currently boycotting gold), but in terms of speed there's no comparison. Game updates, game downloads, installations, and the longest loading screens. Have you ever tried downloading DC Universe Online on there? You're lucky if you make it below 6 hours.
I certainly hope the PS4 will be faster.