They're all really good, my favourite is Leona but I think Brandy is the best.

Brandy by far

Brandy's leagues above the others.

Brandy and Leona are the best.

Leona and Jessie J

Leona obviously

Leona

Brandy >>> Leona >>>> Jessie >>>>>>>>>>>>>>>>>>>>>> Demi

Brandy

Leona probably has more range but Brandy's voice is so much more interesting and infectious to listen to

The other two don't know how to sing.

Leona, although I admit I'm not 100% familiar with Brandy's vocal skills

Leona's vocals aren't as excellent today as they were during her XF / Spirit / Echo days, back then when she covered classics she literally gave the original artists a run for their money. Thankfully she's improving again, and her vocals during the I Am Tour were probably her best since 2009/10.

I ain't overly familiar with Brandy so I won't include her, but it goes Leona, Jessie then Demi.

Demi>

Leona
Brandy
Demi
Jessie

Leona touches me the most, although Brandy's raspy 90s voice is timeless (esp. on Right here Departed). Demi's is cute, esp. on Confident. Jessie, meh, I don't care. I like Laserlight, but otherwise her voice is ok

Brandy>>>>>>>>>>>>>>>>>>>

Why is she even compared to... them?

Brandy by miles.

Theyre the most (subtly) shaded female artists on ATRL .

Brandy