2009 was the best year for the PS3 (Fiscal year still got a whole quarter) but it interesting because with the exception of Ratchet and Clank there were no well known franchises released this year for the PS3... Uncharted 1 was pretty well known but the popularity came with Uncharted 2 really..
Killzone 1 on the PS2 was considering awful I don't think anyone can count this one
Then you got Infamous which is a new IP and Demon's Souls which is a new IP also and did amazingly well
You got FFXIII but only in Japan
2010 we will see the biggest Playstation franchise - Gran Turismo 5 with Final Fantasy XIII (You know what consoles will it move and on what consoles it gonna sell), Final Fantasy XIV and the possibly Final Fantasy Versus XIII in late 2010 in Japan
You got God of War 3 of course it not GT but it will be interesting I think it gonna surprise people both on the software sales and moving consoles
Then you got rumors on revived franchises like Twisted Metal (not confirmed but almost 100% sure at this point)