The few misses aren't statistically relevant. And there is a massive difference between evaluating a potential draft pick and someone you have 6 years of professional level film on
And of course DG said that. He would say that whether it's true or not. To say otherwise would only further limit the little leverage he had. Also, in the event no deal occurs you don't want to give the player in question even more reason to be disgruntled. That's basic negotiation tactics