Lack of advertising and bad release time. Also mediocre review from IGN.
http://wii.ign.com/articles/845/845430p1.html
Nintendo fan, though i also like the PS1-era Sony
Sales Predictions (+-.5mil) at end of fiscal 2007
Wii- 23 million- Brawl will hopefully make it higher.
360-20 million- GTA IV's release date will be a big factor
PS3- 12 million- Same as 360, MGS4 also big factor