Whats up w/ asian people on Youtube?

Hi if you have ever been on youtube and typed in a music video or the lyrics of a song, there is always a videos below it that show asian people singing the cover and they sing it VERY GOOD. Its like an epidemic lol! I never could find a video of an asian person or an asian duet that sing bad( except david hueng lol). I never heard a white or even a black person sing like them. For example erika david she has some lungs on her! But ya is it something in their water that makes them have voices like that lol or am I over exaggerating? Besides theres alot of asians so maybe aleast 450 million could have good voices lol