I played the beta on PC at max settings, it feels like a nicer looking BFBC2, minus vehicles.
If you've played BFBC2, then you've played BF3. I won't be getting it because I already have BFBC2, if I want to play a squad/team based war shooter, I have one, nearly exactly the same game.
If I want to play an arena type FPS, I'll play Team Fortress 2, which is why I won't step anywhere near MW3, either.
"You lack the requisite spine and testicular fortitude to study under me"