I don't see stock pilling. Not, that I would think negative on Nintendo if they did.
THe only region where Wii was always sold out was NA. Europe had many reports as early as March that there was stock sitting in stores. Japan as early as July/August. So, the 'extra' is clearly units that were shifted from these areas to help NA.
That combined with a probably faster shipping process in Nov/Dec, which will lead to far less being sold in Jan, all contributed to what you see as an anomaly.







