A lot of people here seem to be forgetting that Sony is having supplying problems, so their exclusives won't be able to generate console sales(IE: GoWIII, since that's coming out soon). Not to mention M$'s huge investment in Natal and all of the media people will most likely be seeing and a possible(and likely) price cut on 360 models. I believe M$ is also releasing a new xbox 360 when Natal launches, integrating the natal unit into the 360 itself so it will probably go like this.
Xbox 360 Arcade - $149
Xbox 360N Arcade $199
Xbox 360 Elite - $250
Xbox 360N Elite - $299
Don't forget that the 360 can still pull out a "360 slim" as well, so I highly doubt the ps3 will outsell the 360 consistently, especially because of the shortage. It's a bad time to want a PS3..heh
