actually I read wii has surpassed the xbox360 now.

http://www.tgdaily.com/content/view/33512/98/

VG Chartz, which is run by a team of analysts, reports that the Wii has sold 4.24 million units in North America, 3.46 million in Japan and 2.87 million in other countries for a total of 10.57 million units. The data is reportedly based on sell-through figures from retailers and not just the amount of consoles shipped by manufacturers.

The Xbox 360, meanwhile, is behind largely because of its continued failure to capture Japanese gamers. VG Chartz shows that only 430,000 units of Microsoft's console have been sold in Japan, compared to 6.75 million in North America and 3.32 million elsewhere. That brings the total Xbox 360 sales figure to 10.51 million.