Apple used Helvetica Neue first! When the MacBook Air came out. But seriously, who cares? There was plenty of other stuff that was innovative. I loved Shiller's "Innovative, my ass!" comment.
I'm guessing that Mac Pro is not going to be good for games, as it comes with Workstation-class graphics cards. (tho maybe there will be an option?) It's not a gaming machine, even if we all want it to be one.
I'm guessing it will run better due to all those power-saving features that they had to add (which OS X will have, yay!) for full backgrounding.
But then, they have those useless physics effects going on with the UI, so maybe not..