Joubert skated very well at Euros, Worlds and Marshall's. But that's it. The GP was a disaster. In DC he was average, he had one very bad program that took him out of contention for the podium, I don't remember if it was the SP or the QR. He skated well at 2003 Euros and in 2002 Skate America, that he won, but the rest wasn't particularly stellar. So I don't think he's been exactly a consistency role model, but besides Yagudin and Plushenko - the exception - with his age and experience, who is anyway?
I don't think there's any doubt that he's very competitive and determined, but we'll see how he does this season and then we can talk better about his nerves.