from what ive been told from the few mac players ive talked to, they like the game, and it seems to work quite well, one of the ones that i talked to managed to do a suggestion for supporting widescreen monitors, and it went through... so... the mac player voice is heard just as much as the PC judgeing by that...
You shouldnt have much trouble, but, in higher populated/massive stuff on screen areas, then, u might slow down a bit, but, it should pick up, and ull get used to it soon enough.