The OFFICIAL Feb 2007 NPD Thread

[Li Mu Bai]

Christopher_G2 said: Man I'm starting to really buy in the whole VGChart.org sucks thing. According to them Sonic and the Secret Rings and New Super Mario Bros sold less in North American than they did in the United States according to NPD. WTF? And some games only have a slight difference from NPD sales, while some are off by a lot. Are we supposed to believe sales patterns are that much off in Canada from where they are in the US?

Okay Chris, listen up. ioi has gone over the formula of how he arrives at his data numerous times. Any data tracking service incorpoates extrapolations, meaning they can never be 100% accurate as they can never be comprehensive enough to track all retailers. Nor even account for every single copy sold at even tracked channels, but these (the NPD) are very, very well informed numbers. ioi usually accounts for & adjusts his numbers accordingly iirc. Though you must understand that there will always be a %-tile difference, what you see listed at the NPD is not without its innaccuracies, these are not exactly what each title sold in essence.