I love Björk's music, yet I barely understand a word she's saying.
Also, you are grossly underestimating the quality of the songs themselves - melody counts (at least) as much as the lyrics - whichever language they might be sung in.
:lolol:
I think the point I'm trying to make is that a hell of a lot of English music is loved in Asia, despite not understanding the lyrics (or perhaps even the language), whereas it doesn't appear to work both ways.
Surely, that brings it down to the quality of the music itself, rather...
I fully agree about sales being no guarantee of quality, but I do think that your suggestion that the language it's sung in is the main reason, rather than just being 'good music', which (imo of course), is the overriding factor.