There are far too many factors to take into account to know if/when the Wii could surpass the XBox 360 in North America ... One thing to consider is that any system can make huge gains in Q4. Hypothetically speaking, if you have the right product (in this case good games) at the right price with a strong supply you could sell 4 or 5 million consoles in 3 months; this would mean that it is possible for the Wii to eat through most of the XBox 360's lead in 3 months. I'm not saying this will happen, but you have to consider that the Nintendo DS outsold the XBox 360 by (roughly) 1 Million units, and outsold the PSP by (roughly) 1.5 Million units, in Q4 2006.