Kevin Durant overrated, Al Thornton Underrated?

Kevin Durant is good, but he is way overrated. He has a horrible FG percentage, and his team was basically rerouted for him. So he gets over 30 minutes every game. Al Thornton comes off the bench, and he's averaging around 14 points, which is very good for a rookie coming off the bench. His FG percentage is going up, but he can defintely fix his FT percentage. He also is explosive, and he often shows up on the highlight reels. Now why was Al picked 14th?