How can you compare the round each guy was taken in? Why would any team draft a QB 1st overall when they know he wants to play baseball?
As far as upside, yes Henson has more than Vinny. Vinny isn't going to get any better at this point in his career. That isn't a knock on Vinny, it is just reality. He may not even be playing in the NFL next season. Now this will be a knock on Vinny, he never lived up to being a Heisman winner(few do) and the #1 overall pick.
It is possible that Henson isn't the answer. He may go out there and suck and at this point we don't know what will happen. We do know that Vinny is an average QB and that won't change.
Florida was not a good team in the mid 80s, FSU was just starting to become an elite program, Oklahoma was on the way down, Notre Dame was just starting their climb back under Holtz. Miami was loaded(much like today) with talent and had a heck of a defense. Steve Walsh could have won with that team.