Let the hive mind of Engadget get that for you.
"What is the best wireless surround sound speaker solution? I have a home theater where running wires is just not feasible. I have my own speakers, so I don't want a system that has speakers with integrated wireless. I've done a far amount of research and have only come across a few companies that even offer a reasonable solution: KEF, Kenwood and Rocketfish. Is there anything else out there? What do you recommend? Thank you!"
Well, considering that most games made for PS3 runs att 720p I don't really see that your argument has any point. And how come many games (Madden Football for example) runs at same resolution across the platforms but lesser framerate? Duh!
Both the 360 and PS3 make excellent upscaling to 1080p though.