ok, but I don't get it. Are you trying to just take some numbers and multiply them to get another number, or are you trying to actually analyze and figure out what the numbers actually might be? You can't just ignore the fact that those 3 weeks you used to calculate happened before Japan's holiday season while the holiday sales had already started in NA and Europe. Those numbers also include black friday which will put a bit more emphasis on NA than there is supposed to be. Numbers don't drop that far off after christmas either, you can't just ignore that. There is no historical data that is gonna back you up with those 2 weeks after christmas.

I really don't get the 0 week or the 100k week. For historical context this is the Wii's first 10 weeks of sales which coincide with its first holiday and the dates in question.

I especially want to highlight that they were able to sell 2.42m in December last year and still have no week near 0 sales let alone 100k sales.

With the increased production this year I am a little perplexed by the assertion that they are going to be flat out of stock, particularly considering the nature of a supply chain is that it operates like a stream where you can't exactly reach up into the future in pull supply that is on the way ahead to get it here now...which is exactly where the supply will come from for those weeks.

To be clear, I completely agree with a diminishing sales numbers, but 0? 100k?

edit: PS - to be completely fair I don't even really disagree with your overall Wii number, I think it is perhaps a tad low but very reasonable and well within the likely range of results.