Well Mariah's vocals are definitely the most powerful, I was playing her on my way home and was like damn how does she do it. Whitney comes second, and Adele. All 3 are exceptionally talented and have vocal tones & soul that we all appreciate. Imagine all 3 of them were competing in the same era?
![deadbanana3](http://img.photobucket.com/albums/v232/korn0818/ATRL_Smilies_All/bananas/deadbanana3_zpsa2d36eca.gif)
Adele I think has the bigger peak, if not she will get there.
![skull](http://img.photobucket.com/albums/v232/korn0818/ATRL_Smilies_All/faces/skull_zpsksni5fmm.gif)