ioi said:
Actually it is more like this: - Nintendo know actual sell-though numbers at all retailers in the US (including Walmart) via Siras - their internal tracking company so Nintendo's own figures are always pretty much 100% right. - NPD knows actual sell-through at about 60% of retailers and extrapolates to estimate for the others - they will often use Nintendo's internal figures to make corrections and adjustments - VGC knows actual sell-through at a tiny amount of well-chosen retailers and extrapolates this data along with consumer data (polls, gamercards, wii channel stats etc) to estimate for the whole market. In situations like Black Friday where every retailer has different offers and sales can differ wildly even from region to region, it is tough to get from small samples (or even 60% samples when you are missing certain key retailers) to accurate market projections. There is no big conspiracy or anything going on here - just that our preliminary figures were spot on for PS3 and 360 (assuming MS and Sony's figures are pretty accurate), low for DS and high for Wii (as we know Nintendo's figures are very accurate). |
I really don't blame you guys for being off on those numbers, it's really hard to get accurate estimates on Black Friday's week as on top of the usual thing you have to account for the amount of stock each retailer has due to the fact that some of them will experience shortage and others will not and this makes estimating very hard...








