JaggedSac said:
How would one extrapolate data when there is none to extrapolate? |
i don't make the models so don't ask me, that's ioi/NPD's job but it probably has something to do with measuring the relative market share wallmart has vs. the other retailers for which data is known.
think of it this way, if wallmart wasnt' tracked then this would be true:
(MS/Sony/ Nintendo) total LTD shipping = vgchartz numbers + what is currently on the shelves + wallmart sales. with wallmart being (i believe) the largest retailer in america then if walmart wasn't tracked by vgchartz/npd then both of their numbers would be in the ballpark of 30% less than the shipping figures which for the 360 in america is a more than 5 million unit descrepency.








