That's what I was thinking too: some months ago the Wii was adjusted down by 500k, ONLY Wii! It went from 49% to 48.6 if I remember correctly...there were some people complaining but not a comparable thing to this time!

VGC adjustes its numbers to be correct, and they do it without traying to dismiss...did you prefer a wrong LTD?

There is a huge difference between being 100% correct (which no sales tracking data is) or providing false information. As for which tracking companies they're using, in a different graph they're using Gfk and Charttrack data for the UK, France, Germany and Spain numbers. I assume those are also included in that weekly sales graph, combined with data for other regions.

Nintendo posted the freely published numbers in a later slide (where the quote is from). The numbers that are in the slide on this thread are from a combination of sources probably non-published & published numbers.

ioi already stated why he adjusted the numbers, so obviously he believes that Nintendo is correctly portraying the private information in a way that will help this website estimate different region's marketshares better.

@seece

so if they (GFK etc...) aren't 100% right, why the crusade against VGChartz adjusting the numbers. obviously if none of them are right, then how can VGChartz be wrong? (obvious answer is by posting numbers that are higher than shipped, but this isn't the case)

sooo why would the ps3 sales be flat? when in `1 week they sold 500k slims?
kinda weird.

Bad adjustments for psp :(. Hopefully some mor positive adjustments will happen soon.

@psfanboy: Maybe because the Slim caused a spike in sales in Europe instead of a bump that gradually wears out? See the picture of Nintendo's briefing from 3 months ago.

If it hits the magic number, even Sony first party devs will be making Wii games.

GfK (Gesellschaft für Konsumforschung) is a very large company that operates, like NPD, on the sales data they can get from distributors/shops (on _any_ consumer goods. If you want to know how many red bras were sold in country xy, you pay for the data..). In Switzerland, for example, they have the shop data for >95% of all consoles sold. So their numbers are extremely precise. In other countries, the mileage may vary. If you want the console data for Europe, you have to pay for it (probably a rather large sum at that). Occasionally a few GfK data points got spilled into the public domain (and usually showed that the 360/PS3 gap was much lower than shown here). 

What I don't like with this specific adjustment are several questionable things:

a) Nintendo has an estimated graph of some (major) European countries. This site equates "Others" essentially with the entire PAL world.

b) ioi states corrections were over 3-4 years for some parts of his regional data (whatever they are) - so he now adds a single correction over a dozen quaterly financial reports from MS/Sony which already caused corrections when they were issued?

The Explanation. For those who missed it.

I thought something was wrong when I went to check if Others HW had been posted. I looked at the marketshare for the Big 3 and misread at first. I thought it said 48.4% for Wii and thought the Wii had been massively adjusted down. Then I realized it said 49.4%...WTH.

Sony didn't show there shipment numbers yet (Nintendo and Microsoft did) so there still could be some big adjustments for the PS3.