Reasonable on 11 September 2009
^^
An 'armature'! Sorry, funny typo.
Of course the numbers on the site can be off - almost no-one, NPD included, has absolutely accurate numbers. You'd need every retailer to release their cleansed POS data every week - and that doesn't happen so far I'm aware.
Sony and MS will know what they shipped (more or less, even there they may be out sometimes) and will have a fair idea (time lagged) of sales, but even they probably don't have cast iron figures from every retailer selling their HW.
Try to be reasonable... its easier than you think...
