It Most likely will come to OS X but you wont be seeing it anytime soon. They might even make a good attempt of porting it now as Allied Assault on Mac was a joke.
Hmmm. My first encounter with Medal of Honor was AA on the Mac, so as that is the benchmark against which I measure these games, I guess I'll have to disagree with you there, although it's only a matter of what you're used to. I also have AA on the PC and can honestly say that I can't see any difference. In fact the same can be said of all flavours of Medal of Honor as I have them all (except PacAss, obviously) on both platforms.
I haven't tried these games on any consoles tho', so it could be that, compared with them, both Macs and PCs fall short of the (relative) mark.
Pac Ass on the PC is riddled with problems EA Games have really dropped the ball on this one but the concept is excellent. With any luck, the Mac version (if we ever get one) will be free of these technical gremlins. Mind you, It is taking such a slating that I now doubt that it will be seen as a commercially viable prospect.