Xtina is the among the voices of our generation. While it's not the same with Beyonce, but she has won many Grammy to back it up.
Xtina has always been recognized for her multi-octaved, dynamic, perfect pitched vocal + a lil screaming here and there. On the other hand, Beyonce is infamous for her ability to maintain strong, flawless vocals even while doin' heavy dance routines.
Both have debuted in movie industry with respectable gross and Christina even managed to get the legendary Cher to star in her successful movie Burlesque; and Beyonce is taking notes and has been announced to take the lead role in A Star Is Born.
Which one gets your vote?