My progression was CoD 4--1.26 K/D, WaW--1.79 K/D, MW2--1.89 K/D, Blops 1--2.32 K/D, and then Bf3 2.47 K/D
In MW2 I could just take over the game. Especially on certain maps. Like if Wasteland, Afghan, Quarry, or the one with the bridge and all rainy, Underpass? or something. I would be like, gg I'm going to nuke this shit.
In WaW I almost exclusively played Sabotage, I loved that shit. My K/D of sabotage was like 2.50 and then all other playlists brought it way down.
But yeah I know what you mean with the 3 friends. I literally play with like 3 people now as well. Ever since I abandoned the CoD series, I don't play with 90% of my friends list.