I love Colton's voice, but I agree with Steven in that the song didn't really go anywhere. But it was one of the better vocal performances of the night, far better than Shannon. Steven is just horny.
Her voice is good, but again, Steven is right. She did way too much. And it ended too abruptly. The performance would've been better if she did the "wooooahh oooohh oooohh" part at the end.