Diana, while younger, has more public singing experience. She's been performing since she was 6 years old. I will agree that Fantasia has a more defined style and personality, part of my problem with her is that I don't like the alternating thug/whining brat personality that she has.
I agree that Fantasia has an attitude problem, and it could get in the way if she ever becomes a star. I was just comparing singing and performing capability. BTW, both girls started performing at the age of 5. I was talking about the extra degree of life experience and maturity that the three years provides. Fantasia has already had a child. Diana is little more than a kid, herself. Makes a difference in what emotion each girl can bring to a song at this stage of their lives. Speaking strictly about musical ability, I like both girls and would not be unhappy if either one became the AI. As for Jasmine, although cute, she's definitely a cut below the other two.