I dont know man q rich had some very imressive defensive performances against 2 of the best sf's in the league, pierce and king james. Jeffries is a better defender? I dont know about that he hasnt proved it to me yet. He gets a lot of deflections but q rich is could be one of the better 1 on 1 defenders in the league at his position. height does not always matter cuz if it did nate robinson wouldnt be in the NBA so i dont think just having a 6'11" jeffries at sf is an advantage over a 6'6" Q rich.