not very many of those IPs became some of 360's best known though. but alright, you make a valid point that the 360 had a overall good launch with a good lineup.
Ps3 started to turn around slightly in 2008 because it got its first killer app. MGS4. But that year they also lost its last 2 and most anticipated 3rd party exclusives - FFS13, and Tekken 6. But 2009 is when the Ps3 finally started getting some good traction. Kz2, Demon souls, infamous, and of course at the end of the year, the redesigned half the original price console and Uc2. Uc2 in particular to this day is considered one of the greatest games of all time. If we count all of the consoles, last gen was from end of 2006 - end of 2013, 7 years. which would make end of 2010 right smack the middle of last gen, but that's well over a year the Ps3's popularity evened out with the 360.