I believe each console maker needs at least one flagship in each major genre customers buy games in. It is preferred the flagship be the lead flagship for a genre on a particular console, the way Gran Turismo and Halo are (and Mario is in platformers). However, if they can get more, they take it. I believe that is why Killzone is important, and why Sony had hopes Resistance would become it, with KZ2 being a follow up they were unsure of, but betting on. At least that appears to be the buzz.
In regards to Socom, it would be nice if that was a flagship, but apparently the game has gotten bad reviews, and now the FPS that is being talked up now by Sony fans, on forums like this, is KZ2. Even Warhawk doesn't have the same level of buzz. It is possible MAG will supplant Warhawk though. Need to see how it pans out.
Now excuse me as I go play some games so I can get Facebreaker out of my sig below.







