Well, the question is :
Has Nintendo succeed in shipping 80K wii per week like during february month ?
In that case, as march is a 5 weeks month (according NPD), Ninty will sell 80*5 =400K.
BUT who can say how really nintendo has shipped during thoses weeks ?
What if Dematteo (Gamestops CEO) was right ?
http://gamesindustry.biz/content_page.php?aid=23825
In that case, I can easily imagine Wii at only... 100K...