i played that beta and the one that was leaked before it. both were pretty bad.
I got 4 bluescreens on the beta, and then after about an hour of tweaking, i was able to load a map in singleplayer, only to get 23 FPS on average settings with my two Nvidia 8800's in SLI.
Game also is MUCH slower paced than AA2, possibly slower than Ghost Recon if that gives you guys any idea how it plays.
No competition support also means im likely to be disappointed in the game. hopefully they'll prove me wrong though.