Biased much? You could ask the same question as, is this why Non-Western Pop music is "better" than Western Pop?
When I say better, I don't mean artistically better, I mean in terms of sales and airplay, the two are not always riding in tandem. Western music does well in a lot of non western countries but the reverse is not true. I don't pay attention to the music charts myself but I have kids who do. You almost never hear non western music on those types of shows.
I have friends that spend a lot of time in the far east and they tell me western music is heard there a lot, along with local stuff.
Even in Europe, UK and US music does well in terms of airplay and sales but the reverse is not true. I also think there is some kind of automatic bias in the west against any song not sung in English. I've often wondered if this is in some way connected with the lower prevalence of second language skills in these two countries.
Please understand that for me personally, the origin of the music is irrelevant, I listen and it either moves me or it doesn't. Simply rejecting a piece of music because it's not from your own backyard is to deny yourself another potentially fulfilling experience in my opinion.