Which is more reliable? npd or vgchartz?

[Khuutra]

Xoj said:
i got by shipments really.

both are estimates, estimates are for all the time unreliable.

they give you an idea, but are useless as hard data.

Nintendo's tracking company (somebody help me out here) gets absolute statements on how many Wiis or DSes are sold. Maybe Xboxes too if Microsoft uses the service. They can quote it down to the unit.