Definetly a reasonable assumption. I think the system is ready for a sales explosion with millions of gamers that only have a PS2 wanting a new system, and unwilling to take the jump to Microsoft. Some big exclusives, coupled with another price cut and Blu-Ray solifying itself as the format winner could be the combination for that explosion in sales.
Certainly by 2009 I see the PS3 passing the 360 worldwide, and it will never look back. The 360 has pretty much locked itself in the box of being a purely super hardcore older male gamers system. Gears 2 will sell a ton, but how much does it really expand Microsoft's base? Little Big Planet will outsell Banjo Kazooie 3 many times over, and that's just a symptom of Microsoft's long term problem.







