I think we are creating a scenario here:
http://en.wikipedia.org/wiki/Ps3_games
Take a good look. You can sort by exclusives as well.
Now If these games remain exclusive (interesting catch, I know) it kinda shake up the theories here about Sony trumping the third parties. And given the fact that sony gave away the majority of first party tools and engines9 such as ice and edge) and held a session with their first party devs laying it bare for third party devs, I do not think that Sony has the ultimate upper hand here. YOu can argue that whoever is willing to spend more money has the upperhand. It is said by many developers that the baseline is easy and it is the additions and draws that start the struggle but most seem to agree that it is no worse than the PS2.
Atlus, spike, koei, capcom, square, konami, namco (outside of cellius brand), sega, sunrise, square enix, nippon ichi (makai wars baby), idea factory and many others still have listed exclusives and some of seem to be some very fun titles on the horizon.
Time crises 4, monster hunter 3, way of the samurai, castlevania, driver, shin megami tensei, makai wars, gradius, wardevil, ZONE OF THE ENDERS 3!!!! (woot). Yeah there are some reallyawesome titles announced and I hear more are on the way but batting in terms of exclusives many third pardies will hold their own against sony franchises.