If I include the full PSN games ie Calling all cars, SSHD, Warhawk etc I think I got about 15-16 games. And I have never bought so many games for any system in my life, MAYBE I had that many original games on the C64, but other than that, not even close.
Yes, I have 4 PSN titles too, bringing my total to 15 after about 1 year of ownership.
(Have 6 Blu-ray titles excluding the free ones).