I think the problem with Killzone is brand awareness. The first one didn't do great considering it was on the dominating system last gen, and the PSP title isn't even a million seller yet. With the PSP having a 20 million install base, and the PS3 having considerably less, what are the chances it will push huge numbers? And ... what will be the 2nd million seller for the PS3 anyway? The only one that has broken a million units is Resistance: Fall of Man. I think with this announcement, Halo 3 may very well be the biggest selling console game, especially with the simultaneous release in Europe.
Threads of Interest:
The Movie Thread: http://www.vgchartz.com/forum/thread.php?id=6880
The Crow Eating Thread: http://www.vgchartz.com/forum/thread.php?start=0&id=3886
The Betting Thread: http://www.vgchartz.com/forum/thread.php?start=0&id=7104
Custom GIFs Thread: http://www.vgchartz.com/forum/thread.php?id=18963
The Greatest Game Ever Conceived On Any Platform
Tag: "I have tasted Obi-Wan's bitter tears"