There a lot of discussions around the Internet arguing about which consoles has the best exclusives. Well, the Australian edition of IGN made a report analising which home console system had the best exclusives this year.
You can read the full article here: http://ps3.ign.com/articles/937/937162p1.html
It's only their opion but I do agree "Sony's system has the highest standard of exclusives, paired with plenty of variety". And 2009 will probably be the same, if not better.
Anyway, competence is a good thing as it makes developers trying to do their best on every gaming system.