yeah ps3 exclusive games and franchises have NEVER gone to xbox 360 as exclusive, timed exclusive or multiplatform titles:
Grand Theft Auto IV, Street Fighter IV, Assassin's Creed, Virtua Fighter 5, Soulcalibur IV, Devil May Cry 4, Unreal Tournament III, Tekken 6, FF13, Tales of Vesperia, Ace Combat 6, Bully: Scholarship Edition, Metal Gear Solid Rising, Way of the Samurai series, Raiden series, Virtual On series, Star Ocean: The Last Hope, Dance Dance Revolution series, Dark Sector, GripShift, Beautiful Katamari, Record of Agarest War, Earth Defense Force 2017, Magna Carta 2, Quantum Theory, Samurai Warriors series, Armored Core series etc.
more apropriate question here is how many exclusive games and franchises to playstation stayed exclusive on playstation console? besides Yakuza franchise there's nothing. all those games and franchises went multiplatform, exclusively to 360 or to completely different platform(mostly psp and ds).
will Agent will become multiplatform - probably yes. will we see the game anytime soon? hell no.
