Your analysis is pretty good, but you missed the fact that Vonzelle was OFF KEY for all of both of her songs.
She is pretty and the camera loves her, but Vonzelle is a terrible singer. Her "Star Search" reach she puts in each song is holding her aloft, but sooner or later the audience has to realize she can't sing.
Carrie does well when she pts herself out there -- but she should avoid ballad-type material. She dissapears. But she hits the notes.
I think this is between Bo and Carrie.
I didn't hear that. The first song certainly had its pitch problems, but I only noticed issues during transitions with the second song.
I wouldn't say Vonzelle can't sing, but she definitely needs to drop the "Star Search" schtick.