1. Japan is Japan.
Only out of respect for this mother-of-console-gaming-country we should already have a separate sales chart for them.
2. There are no clear sales figures for other Asian countries, so an 'Asia-chart' would be meaningless, 'cause it would be made up out of Japan sales.
For me it's still not clear what the countries making up Others excluding the EU and Australia are.
But as long as the Other- and Australia-part of the Others-sales is not a major part of the total Others sales, you might as well keep Others together (EU+Australia+Other).
''Hadouken!''