WutDaFunk,
It's not exactly apples to apples here, but I'm using a MacBook Air (latest gen) and find the game's performance to be fine. I run it in full screen mode and have no issues with framerates or having to downselect resolutions.
Granted it's not Windows, but the MacBook Air isn't really designed to be a gaming machine, so I'm pretty happy with how it turned out.
Good luck in any case!
-Nixx
