China may have a population of 1 billion, but most of those people live in rural areas. According to this article: http://www.chinadaily.com.cn/english/doc/2006-02/23/content_523256.htm, the rural population is at about 750 million, leaving only about 250 million people left. That's twice the population of Japan. To make the numbers you're suggesting work, you'd have to assume that the Chinese population will buy Wiis, PS3s, and Xbox 360s in the same proportion as Japan and that each Chinese person has equal(or greater) purchasing power than each Japanese person. This is extremely unlikely, as China's economy isn't as large or robust as Japan's and China's distribution of income is *very* uneven.
A more likely scenario is that China will buy a half or a quarter the number of Wiis that Japan does. Maybe. India's economy is even poorer than China's. The impact on sales numbers from India would probably be too small to be worth considering.







