IMO ioi, your numbers are getting tons better, but a quick sugguestion: If you want a simple, easy answer as to why/how your numbers are off, let me give you a one word explanation: Canada As we saw in the NPD Canada thread(s), the sales were extremely different than the US. For example: The Wii sold 11.6% of the NPD Wii total. However, the X360 sold only 7.1%. The PS3 was about 10.5% of the Canadian numbers. The DS was in a similar situation as the 360. It was only around 7% of the totals. IMO, the DS numbers will always be suspect, as there's no easy rhyme or rhytmn to explain their numbers, as it's odd that canada had such a large Nintendo discrepancy. However, I do feel that you'll need to edit your formula based for those numbers. I have no idea what stores you use to extrapolate your data in Canada. However, I would take into consideration, the various percentages of the Canadian market. Most criticism for your numbers was due to the 10% add-on you have always given NA data vs. the USA NPD numbers. IMO, you need to make sure that you try to find, over the next few months, a more valid formula, as the Canadians do not have the same tastes as we do.
Back from the dead, I'm afraid.
