This is an example of where a singer thinks their singing abilities can carry them through a different venue such as plays, movies or in this case, musicls.
No one dens Carries' ability to sing. What is questionable is why put someone who is obviously only experienced in singing performances in a role which requires BOTH acting and singing.
This s a case where Carrie was pt in a situation that shows her inexperience and lack of acting ability. She looks like a singer who is putting on a musical for tv instead of being an actress who plays a role.
I'm certainly not comparing her to JA but let's be honest, her performance is college level at best and that's only because of he her singing ability and not her acting.