QBs that get drafted high in the first round of the NFL draft all have great physical abilities. They all have great arms, prototypical size, etc.Trent Dilfer IIRC was a top 5 draft pick.Basically, all these high round picks need to pan out is the mental ability and leadership that a good QB needs(the all already have the physical skills). This is what separates Ryan Leaf from Peyton Manning.Well, Trent Dilfer is widely regarded as one of the best teamates in the league and a great leader. And when the Ravens won the super bowl, Dilfer was widely regarded as a great 'game manager' and someone who doesn't make a lot of mistakes.So lets recapilfer has amazing physical talent- enough to be a top 5 draft pickHe is a good leaderHe doesn't make a lot of mistakesWhat exactly am I missing here? Is there any reason why this guy isn't at the very least a starting QB? What are his shortcomings?