Gamecube and Xbox had plenty of months in the USA where they switched off almost monthly for second place, especially in 2003. The race for 2nd place worldwide is always pretty nasty, in the USA I think we've reached a point this generation where even a 3rd place console can sell 15 million units (more than Xbox or Gamecube).
If Metal Gear Solid 4, GTA IV, and a PS3 pricedrop come within the same month, PS3 should beat 360 rather easily. Say the three occured in March 2008, I think you'd see PS3 go from 25k-40k/week to 45k-70k per week for about a month.
Alot depends on 360 releases too - Banjo is going to be a big game for Microsoft next year, and Too Human could be pretty big as well, so I'd say alot depends on timing.
People are difficult to govern because they have too much knowledge.
When there are more laws, there are more criminals.
- Lao Tzu
