Vince didn't have criminal behavior at Texas...was
basically a saint

Vince Young never recovered from a benching from his
coach, in part because he didn't have the pure talent
to compensate...he was a pure mental toughness and
instincts player

The better Jameis comparison is Ryan Leaf. Both had/have
prodigious arm talent. Jameis is much better neck up
than Ryan Leaf, though