I think some of the disagreement about player comparison to Jerrick McKinnon of Woodhead/Sproles is that McKinnon's skill set is not limited to a pass down specialist the way that those two players careers have been. I think it is remarkable how far Jet has improved as a receiving RB option compared to where he was as a rookie to be even mentioned in the same breath as these excellent receiving RBs.
I went back to page five of this thread looking for little nugget droppings of info in regards to him back then. In 2014 McKinnon only had 3.3 yards per target which was one of the worst of all RB from that season. You could see it when watching him as well. He had very little experience in this area from college and it definitely took some time for him to learn how to run routes with timing and also his catching technique. Athletic phenom with not many comparables, but he played option QB in college, he didn't have any experience running routes or being used as a receiver. He has been learning on the fly.
He showed noticeable improvement in this aspect of his game last season. He looked more natural running routes and adjusting to the ball in the air. He still is below average in this category with 5.9 yards per target and 72.4% catch rate.
The other area where this comparison doesn't match up is that McKinnon runs with more power than I think these comparisons do. For example from Arif's
article evaluating RB based on height, weight BMI (where no correlation of success was found by these metrics) McKinnon had 63% of his runs gaining 3 or more yards. There was an emphasis from Norv Turner that he wanted the RB to improve their yards after contact, which McKinnon did improve in this category significantly in the 2014 season from what he did in early games.
The small sample sizes for Jets workload makes it problematic to take any of these things at face value. However based on personal observation of him, I think he has the skill set to be a featured RB in the NFL. He just needs the opportunity to prove it.
I don't really have a good comparison for Jerrick McKinnon. I think he does have Tiki Barber upside if used as a feature RB although I think Barber has shown more natural ability as a receiving RB in his career than McKinnon has shown thus far as well. If he reaches that level of play as a receiver I will be pleasantly surprised. I think McKinnon has shown significant improvement in this area, but he hasn't played at that high of a level as a receiver yet.
Adrian Peterson has talked about how good McKinnon is as an athlete. He is really impressed with him. I never heard him say such positive things about another RB, like Gerhardt or Chester Taylor who were better than Peterson as pass blockers and receiving RB. Peterson says McKinnon really pushes him, because he knows how good Jet is. He knows he has to stay at the top of his game to keep Jet from eating into his playing time.
I think McKinnon is capable of being a top 12 RB in FF if he got the starting job. I think he is a better runner than he is a receiver at this point of his career. He has shown significant improvement in both of these areas so far, he has really improved as a receiver especially, which is to be expected considering how inexperienced he was in this part of his game as a college player.
It makes me wonder why Peterson hasn't shown similar improvement as a receiver? I don't think Mckinnon was as good in this area as Peterson was as a rookie, but he has passed Peterson up in this skill set already.