The problem with this sort of analysis is that it relies on straight-line projections. It is much more indicative of current sales than future trends. Any number of things can happen along the way.
The casual market that Sony is more friendly towards? They're not the fanboys. They can and will walk away from Sony if given a reason, and currently the Wii and PS3 have given them a reason to do so.
Japanese bias? OK, the 360 likely will not do well in Japan, but that doesn't mean the PS3 will. Certainly the cultural bias didn't stop the XB from stomping Nintendo in 2 regions. If PS3 sales don't pick up in Japan, the 360s edge in the west could be enough to carry the day.







