What games though? Halo, one of the most over-rated franchises of all time, Killzone and Gears of War. The only ones that ever tempt me toward a console is the Quantic Dreams ones (Heavy Rain, etc). But for me it isn't enough to warrant splashing out another £400. I honestly believe we'll see less and less exclusives as publishers and developers will need the extra income and will want to take advantage of the same architecture.
Sony has the most and highest quality 1st party studios out of all 3 console manufacturers. Skipping an Xbox is easy, only exclusives I care about on Xbox are Halo and Gears of War. Nintendo has Zelda and Mario. Sony has God of War, Little Big Planet, Uncharted Series, Sly Cooper, Ratchet & Clank , Team ICO games, Resistance series, Quantum Dream games, Gran Turismo, Journey (probably the best budget/download game ever made), Twisted Metal, MLB The Show, Wipeout, etc. - and that's only 1st party. When you count 3rd party there's stuff like Ni No Kuni (the only actual good JRPG this entire generation), etc.
Haters can can talk all the shit they want about those games but when you look at metacritic numbers the fact is most of them are some of the highest rated games in their respective genres/generation and they will *never* be on PC.