Singles artist meaning her albums as a whole are not good only the few singles; the albums used as devices to warrant a tour and generate money.
I like Carrie's singles, she is deserving of this record for putting out many good ones
And for the record, it is really not hard to get a writing credit, just change some things here or there. With a voice like her's, Carrie doesn't need to be writing songs, she's got actual talent performing and such.