Moving right along to the subject of Killzone 2 -- a game released on the 27th of a 28 day month -- Greenberg compares the title to the aforementioned GTA IV mystery numbers, "If that content was sold at retail, it would be one of the best sellers across all platforms. It would have outsold Killzone 2." Considering GTA IV's astronomical sales numbers, if even half of the game's owners have the 360 iteration and a quarter of those people bought the expansion, that's over 1.5 million downloads. Still, without hard numbers to back up his statements, Greenberg's words amount to little more than our monthly rendezvous with executive smack talking.
Update: SCEA responds to February NPD numbers on Joystiq PlayStation. "We have no doubt [Killzone 2] will deliver a next gen experience and will be responsible for driving hardware sales throughout the year."