OK if you think I'm exaggerating tell me an artist who has an amazing voice (but not just an ordinary great voice, a really stunning voice), who writes his/her music, produce his/her own music, put a lot of talent/creativity in his/her music and all of this AT THE SAME TIME!

No one!

You would say probably Madonna/Whitney etc. Yet Madonna is famous only for her controvesial style and music videos, she has a ordinary voice. Whitney can sing at the same level as Mariah but she is not involve in the creation of albums. She cannon write nor produce.

Like I said Mariah and Michael are the ultimate best artist of all time. No one can compete!