I think the right way to look at it is not to look at college production, but just to trust your eyes as a scout and talent evaluator. A player's measurables tell you about what kind of physical talent he has. A player's performance in drills and interviews tells you more about his skills and the player as a person. A player's film tells you what kind of a player he is, more than some numbers on a sheet of paper ever can. How many ultra-productive college players just don't have the skills to translate to the NFL? As a fan, I would prefer teams who stick with what their eyes tell them over basing too much on statistics or not. It's all part of it, but...
I think it's the same way with college recruiting. Look at Blaine Gabbert's numbers as a senior at Parkway West...not too good, if I recall. So many things go into numbers, really.
McNeil and Paul had very bright futures at the beginning of the year. They both dropped like a rock during the season though. I think that's unsurprising. Paul exposed his weaknesses a bit and McNeil...I think I agree with other posters, he did have plenty of weaknesses to begin with. He was never a tenacious blocker, so he really needed to demonstrate productivity and reliability catching the ball - and he didn't.