BKK2 on 09 February 2008
It's difficult to track European sales so for certain some hardware will be over or undertracked in some countries.
It's worth noting that the article states that GfK covers over 80% of the market in Germany, so actual sales are higher (this suggests GfK don't extrapolate to 100% of the market as NPD do). So VGC hardware should probably be 15-20% higher than GfK (I assume VGC aims to cover 100% of the market).
