I don't think NPD tracks Toys R Us either. I'm guessing Walmart is #1 and TRU is in the top 4 in terms of largest Wii Retailers. Best Buy and Gamestop are probably in the 2-4 range.
I think that is right. And if NPD uses old models to calculate those sales -- they just get them wrong because the Wii <> GC. (<> is the same as =|=). (This is a point that I have made time and time again -- often to no avail to those out there who beleive too strongly in NPD.)
Some people think that NPD is gospel because it is a secret, subscription service. In fact, it is an estimation tracking service -- just like VGC. The only difference is that VGC has much more transparency -- it is known when it makes corrections.
The financials in two weeks will be much more instructive than these numbers with respect to hardware.
In closing, remember that NPD can be wrong!
Mike from Morgantown