The point of the post was this...
360 sales in USA by itself as of Jan 1 08 = 9,150,000 > 8,307,629 all console sales in Japan put together as of March 30, 08.
In other words, Japan's console market is less than 15% of world sales. Bringing it up as a example of sales is pointless. It's like saying coke is better than pepsi because it has a 85% market share in Atlanta, even though Atlanta may only represent 10% of Coke and Pepsi sales in the USA.
Submarket numbers cannot define a best seller.