I would rank them the same way you did, TIdoublegaER. Not just based on tonight's performances, but the performances as a whole.
As much as I cannot stand Simon, he is pretty accurate in his comments. Clay is immensely talented, but more suited for Broadway. Carmen and Josh are not in the same league as the others. Ruben is the best all around, imo, with Kim L. running a very close second. And I really like Trenyce too, although I'm sure she will be going soon.