I would also say No. But it is funny how Microsoft really wants to win a week because of Halo ODST. You can tell this because they offered that $50 rebate on Elites starting the same day as the Halo release.
It is kind of hilarious I think. They want to be able to say, "look we outsold the PS3 after they did a $100 price drop"
But if Microsoft does not even outsell PS3 hardware in America for ODST week, then that will be very telling imo.
I think NA will be very close/ basically a tie for the two, but WW PS3 will win by ~100k.