I have no practical experience with this other than my breeders dogs who we have spent some time with. They have IPO certs. I don't think I have seen two more well mannered GSDs. Well behaved, friendly and happy. Of course we jumped at the chance to get one of their pups.
So, I have to agree with Baillif that it depends on the dog, breeding, etc.
Dagr "Dag" 11/07/2013-