^You're actually wrong on the billboard Japan thing. It did chart on the Japanese billboard chart. I believe her peak position on that chart is #38.
This is the week for March 13:
http://www.billboard.com/bbcom/esear...03%2F13%2F2009
You can view her chart history here:
http://www.billboard.com/bbcom/esear...=37+4293103708
Here is the actual chart:
http://www.billboard.com/bbcom/chart...1-50&g=Singles
*I know this is the American Billboard site, but the information from the Japanese site is the same as the American one.