Let's just say the PC's superiority is far more evident in the full game.

Yes, it's very playable at ULTRA. I have a dual core system, I7 3.8 ghz , and a 1 gb ATI 5770 video card. Runs without any problem at all, and fast. Game had it automatically set at hig for me, but I decided to try ultra just for the hell of it. I left it on, obviously.

Btw EF, just so I don't forget. A big from me, for my personal PC game of the year for sure..

Okay, and make that 2.93 GHZ. I'm slightly embarrassed for not knowing anything about my own system!

That's the reason then.....'vsync' is the term that synchronises your framerate with your monitor refresh.....therefore you will 'max out' at whatever your monitor is pushing (in most cases 59/60hz) for LCD's. It's the same reason why you should experience less clipping/artifacts/tearing because the frames don't update before the monitor is ready to display them.

I'm playing BF3 with vsync off and there doesn't seem to be any problems.

This post explains why vsync can be a bad thing in games a lot clearer than I ever could. It really comes down to how your graphics card copes with a particular game, vsync has its advantages as well as disadvantages.