Still playing on, I have to say the description of this as a Ghost Recon type game is pretty apt, about as good as the first one I'd say. Can't really compare it to Arma 2, as it's not a sim. Shame about the entity limit, really makes these battles kind of pathetic in scope. Who knew the USMC conducted assaults with 20 guys, heh. Not that impressed with the hostile AI, their ridiculous inaccuracy at 100m aside, it eventually devolves into a whack-a-mole with them in cover. Also they can track you through smoke, which is a bit ridiculous.
Friendly AI does perform pretty well, at times. One thing I dislike about the campaign is the way you just appear in the field, no indication of being dropped off or whatever. The 4th mission with your fireteam just in the middle of nowhere was amusing to me at the start.