If you remember, the PS3 outsold the 360 during many months in 2008 (worldwide)...till September or October (I think it was September) when the 360 received a price cut and turned things around, then the reverse happened last year in PS3´s favor.
It seems another price cut for the 360 is expected this year, perhaps to coincide with the launch of Natal, or maybe even earlier....now, if that happens, do you expect the end of this year to play out the same way as it did in 2008? (meaning the 360 will go back to outselling the PS3 week after week, worldwide).