U guys just naming a few exclusives which go multi. Here are some exclusives for the PS3 FF XIII & versus, God of war III, Killzone, Rachet and Clank, Uncharted, MGS4, Resistance sequel, Heavenly Sword, Coded arms, GT 5 etc.
These games are enough for Sony to atleast keep the 2nd Place all of these games except for uncharted and coded arms were not played by any one yet, are excellent. The first party titles of sony would also be enough, if u disagree check out the first party titles of M$ Halo and Gears of War and Forza. Gears of war would have competiotion with Resistance the game was excellent and it was only a launch title. Killzone is getting better and better proof Killzone Liberation which got 9/10 in IGN.