| drkohler said: 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? |
a) duely noted, and I'm 100% sure ioi is aware of that
b) beings that we don't know enough information we can't argue either way whether the adjustment was "bad" or not. We do know that VGChartz overestimated the size of some markets. As stated though, ioi believes this isn't just a 3 month overestimate of market size, and obviously would have to be corrected back through the years.
