Tom Clancy's Ghost Recon Advanced Warfighter 2 review at 1-up.

"Well, now, this is disappointing. I wasn't expecting a full-fledged GRAW experience on PSP, to be sure, but Ghost Recon: Advanced Warfighter 2 comes off feeling like a slightly more high-tech knockoff of SOCOM: Fireteam Bravo...only without teammates, online play, a reliable lock-on system, solid level design, or online play.

So, uh, not very much like SOCOM at all, really.

But it's not very much like the console versions of GRAW 2 either, which is the real problem. Where its big brothers mix tactics, team control, and action to keep things interesting, GRAW 2 on PSP strips things down considerably, putting you in the combat boots of a solo Captain Mitchell following the events of the first game."

Full Source: 1-up