I got so excited when he came out and called out John Cena after Backlash, but... got disappointed when I realized they were never really going to let him face John Cena one-on-one without the Big Show getting involved.
I don't think he's there yet either, and like Baba said, I don't think he carries himself like a main-eventer either. However, like MF said, I do think he *may* have potential, and has come a long way since his debut. He needs a better finisher, IMO, and a few decent feuds to get him going, as playing tiddlywinks and footsie with John Cena while he's continuing his feud with Big Show just isn't doing him all that much good. A feud with HBK would serve him well, as just about everything HBK touches seems to turn to gold.