You take the guy with the elite physical attributes the right attitude, and the willingness to work hard. You take the guy with the persona of an NFL quarterback, as indicated by leadership attributes, competitive nature, and instinctive mentality of a quarterback.
You can teach mechanics and reading defenses.
Lynch is like that perfect physical speciman who looks like a world beater but lacks the instinctive mentality, the love for the position of quarterbacks. Those kind of guys underperformil when faced with equal physicality, guys like Bruce Carter, Ryan Leaf, and Trent Richardson.
From what I understand, in high school he was switched from RB to QB because his coach told him he was too tall to be a RB. I don't see that self confident, fighter pilot, slightly cocky attitude from him that I think is inherent in most successful NFL quarterbacks.
Goff is the real deal. The bad news is that he will climb to the #2 or #3 spot before the draft.