if the harrier doesnt get shot down it can get you crazy kills, if placed right it can get you at least 2 usually 3 on just the drop, and another 5 or 6 with the hovering one. So easy to get chopper gunner of ac130 with a harrier
I like the Harrier if Im trying to get a 11 kill streak(AC130/CG), or playing against noobs without stinger missiles.
But in Free for all, Predator/Attack helicopter/Pavelow is a beast!
I prefer the harriers just because I usually get atleast 2 kills with the airstrike itself. If I have pavelow equipped then i already got it from the airstrike..
dogs are better than the cod4 heli. in mw2 i have to say harriers. yes i know it is for funerable to stingers and what not but it has an airstrike and placed correctly can get you 3,4+ kills which is an immediate advantage over the heli. my killstreak set up is harrier, chopper gunner, nuke. its the best by far