misterd said:
That's precisely what I am trying to find out. How do you get that the Wii is 600k behind? That would imply roughly 2 million busted 360s, and I didn't know anyone was leaking those numbers. |
I apologise, I missed this until now...
Basically groups like NPD and VGchartz, and I think Mediacreate also take retail samples and use statistics to estimate sellthrough numbers. Now most people see this as being very innacurate and there is no doubt that it is not perfect. However statistics in general is a highly respected field of mathematics and all parties (including VGchartz) try to provide the most accurate data they possibly can and the numbers are not just pulled from thin air. One of the site admins will have to go into more detail for you if you want to specifically know how the numbers are obtained as I am unfamiliar with the exact process.
However the important point to realize is that VGChartz does this for free where as NPD requries HUGE subscription fees to get their data. There is quite a bit of work involved in gathering data and calculating the final numbers so you can be fairly sure that these guys don't do it just to make one console look good or one console look bad. There is just way to much effort involved for not that much return for that to be their motive.








