OMG! You Xtina fans/stans are amusing! To argue who has more soul is debatable because only the person who listens can determine that, however, if you people actually comprehended true vocal pedagogy, it would be not argument as to who has the better voice. Clearly Beyonce>>>Christina! There should be absolutely NO argument whatsoever about this. I don't like Christina but she had immense potential but she ruined what could have been an amazing voice!