I think you guys are getting caught in the Guitar Hero 3 sales hype with other games. Guitar hero is really a special type of game that COD 4 could never duplicate in sales on week one. Don't forget COD 3 only did 163k in it's first week on the 360 last november and the 360 had a considerably larger american install base than the PS3 does now. Knowing this, it should be nearly an impossibility to sell more than 160k for PS3 in an almost identical situation one year later.
PS3 = 115-135k 360 = 340-360k
I don't know why you guys think COD 4 will have a much better first week than Guitar hero 3 did on PS3. GH 3 is the ultimate party game casual seller and broke records for activision, records COD 4 won't be breaking. I'm predicting it will eek out a slight victory on PS3 due to being 40$ less but I even have doubts about that.
