Whitney and Mariah are both great artist In 1985 whitney came out and killed the Pop chart until 199 when Mariah to give her a run for her money. They both have bout 5 or 6 grammys each Whitney 11-14 #1 Singles Mariah 18 #1 singles. All of Mariahs album sold more than Whitneys albums except #TheBodyguard which sold over 29,000,000 copies still making Mariah Carey the best female seller of all time