From what i've read or heard, Japanese consumers tend to stick with Japanese products. Probably is a waste of money to 'try harder' in that sense
The answer to the OP's question is no, it sold far more, just over 1.6 million. That 2 million figure includes Australia and New Zealand. 360 at least gained a foothold in Japan. http://www.neogaf.com/forum/showthread.php?t=756020