It has a long way to go in America.
http://vgchartz.com/hwcomps.php?cons1=Wii®1=America&cons2=GC®2=America&cons3=GC®3=America&start=39124&end=39488&weekly=1
In my opinion, every area needs to dominate for it to really matter, not just Japan and Others... (although is nice that it's nearly there world wide...)