Those numbers are just the last official numbers from nintendo's financial report (check out the hardware shipped page - the breakdown is the same, since that is where ioi gets those numbers..).
Even if you don't trust Vgcharts, Wii is at 3.1 million in the USA & Canada by NPD as of June 2, 2007, 2.7 million in Japan by M-create as of June 17, and at least 1.47 million everywhere else by Nintendo's estimate for March 31..
That alone gives you 7.27 million, and it doesn't account for almost three months of European sales, and two weeks of American sales to be current through June 17 worldwide.
7.27 million already brings you within 15% of the Vgcharts number though if you only trust official data...
People are difficult to govern because they have too much knowledge.
When there are more laws, there are more criminals.
- Lao Tzu
