So right now the 360 has sold 25.18 million with only other sales for week ending December 13th.
The equivalent week last year Japan and America sold 336K.
Last year after this week the 360 sold 929K. Bear in mind that so far this year the 360 is doing 50% better WW Black Friday week and the following week.
If the same thing happens this year at the end of 2008 the 360 will be at 26,445,000 and 10,577,706. This means that over the next 3 years the 360 will need to average 7,851,667 or less (Based on actual 2008 numbers) to hit 50,000,000. I expect that this will happen.
With the prices the 360 is at now and possible $50 price reduction end of next year I suspect that 2009 will be the 360's best year and sell over 11,000,000 maybe hitting 12,000,000.
Its libraries that sell systems not a single game.