Jaywood2010 on 11 May 2013
This is a non issue for most items. Yes there is some like X360 UK sales are completely missing on some games. T hat is not undertracking but a complete error.
Here is the thing. 99% of every game on this site is probably under or overtracked by at least a small margin. Especially if you want to consider digital sales. The thing is they are estimates of sales from retailers and should be treated as such. As far shipping, that is what companies track. VGC tracks sold. If you want to follow sold then VGC will give you good estimates. If you want to follow shipments then follow the news when companies release info, if at all.
In the end don't expect 100% accuracy. They are only estimates.
