I don't think that Jenkins' version is bad. I feel that Goodrem puts more emotion in the song and I think I enjoy hearing Delta's version more then K. Jenkins version. I think it would have been a little more interesting if she had put her own spin on the Delta song!
I completly agree with you, its missing originality! If she had tryed to sing it in maybe a more operatic way and really put her heart into it it could have been amazing.