Looks like Kotaku made a mistake. Here is another article:
"Nintendo sold 5.2 million Wii machines worldwide during the quarter -- 1.7 million than for the same period last year. It also sold 3.4 million "Wii Fit" games and 6.4 million "Mario Kart Wii" games."
Those figures are just for the previous quarter.
http://biz.yahoo.com/ap/080730/japan_earns_nintendo.html







