Uncharted sold more than 2.5 million copies simply because it's a great game. The best of the genre on PS3. Resistance 2 failed to outsell its original iteration because CoD4, Killzone 2 and CoD WaW are better FPSs around. Same with Motorstorm. It offers pretty similar package of content to the first one while there is pretty tough competition right now.
Dogs did their homework and Uncharted 2 is better in every single aspect to the first one. Drastically. Game will track much higher and I expect it to sell around 3,5 - 4 million lifetime.








