Quan isn't as physical as Tim. Look at this point of view. As a saftey you're known as the last Line of defense ,correct? So when something breaks through the l.o.s you want a guy that can come downhill and make the tackle . Also if you were to break any game down, you will see that there are more run support from your safeties then playing the deep ball. The past Safeties that have been drafted in the 1st round in the past 3 years are all safeties who play down hill and are not known as ballhawks, then again there is not that many ball Hawks safeties, so I'll take the saftey who can come up in the run game and do there job on the passing game.