Okay, I'm giving my views on both of these singers.

Carrie
Now before anyone says that I'm only saying what I'm sayins because I don't listen to country music, I like country music. I listen to country more than I listen to  so that's one theory squashed.
Carrie isn't a bad singer but, I'm not a fan of hers. I don't hate her but, I always though she was average. That's just how I feel. But  just recently, I was listening to "Jesus Take the Wheel"  (yeah I know the song came out a kajillion years ago but whatever). I was moved by that song that I kept playing it over and over. That song also reminded me of how good of a singer Carrie really is. If she keeps churning out songs like these, I might consider buying her sophomore album.

Fantasia
I like Fantasia and I know alot of folks don't like her but hey, that's their opinion. People dissing her on her looks is one thing (she isn't bad-looking but, she isn't too good looking either). But, to say she can't sing?!? What the...are these folks deaf?
I know some people don't like her but, come on....give credit where credit is due! The girl can sing (she's a better singer than Carrie in my opinion). Some people say she can't sing because her voice sounds all raspy....and yet they'll have the audacity to say that Rhianna can sing and her voice being so raspy is one of a kind. Now I'm not saying Rhianna can't sing,  but you get my point don't you?  At least I hope so.

Well, that's my take on these two singers.  I know they're doing well in their respected genres now but, I hope they have the staying power to continue to be successful.