Gang wars is fukking fun as hell! It's sort of like Warzone from Killzone/ Team Objective UC3 but with a max payne story twist. The little music that plays during matches is pretty cool.
The MP is very fun and I thought it sucked when I saw it online at first. I played it for 4 hours last night and only played SP for about 30 minutes.
Only thing I'm not quite getting so far is the aiming controls. When sprinting, the camera feels so freaking sensitive and is jarring if moved. Shooting from behind cover near a wall feels weird as on the left side your character doesn't even aim out past the wall but into the wall.
Also there seems to be no bullet tracers when shooting the AK so it's hard to tell where you bullets are going. Other than that I love the MP. Finally a good TSP MP besides Gears3 /UC3. I aint' play really nothing else on my PS3 consistently besides UC3 since the past 6 months.