MGS4 sold well partly because it was the first AAA PS3 exclusive?

[txrattlesnake]

It wasn't the first AAA PS3 exclusive. Play magazine gave Heavenly Sword, Uncharted, and Ratchet and Clank Future all 10s. And they also gave Folklore a 9. And IGN gave Uncharted a 9.1, Ratchet and Clank Future a 9.4, and Folklore a 9.0