16. Jameis Winston, New Orleans Saints
Jameis Winston was actually putting together a not-half-bad season last year before tearing his ACL and putting the New Orleans Saints in quarterback purgatory. His passing yards were low as the team did not totally trust him but he had a 13/3 touchdown to interception ratio with a 58.94% completion rate in his first six games.
Now that was with Sean Payton calling the shots, though. His weapons this year are much better, especially if Michael Thomas actually plays. But how Winston plays with Dennis Allen as the head coach is yet to be seen.
15. Ryan Tannehill, Tennessee Titans
Ryan Tannehill had some of the most impressive numbers in the league after becoming the starter of the Tennessee Titans. However, something became abundantly clear in the playoffs last year. Tannehill is not someone you want starting a playoff game, especially if Derrick Henry is not 100%.
Tannehill was exposed a bit by the Cincinnati Bengals despite the Titans being at home and being far more rested. With Tannehill's past, it is really hard to rank him much higher after that showing.
14. Matt Ryan, Indianapolis Colts
This season will be very telling for Matt Ryan and will be an inflection point in his career. He either struggles in Indy and it simply becomes the fact of him getting old. Or, he turns it around with the Colts and proves that he still has more to offer as an NFL quarterback on a good team.
Personally, I am betting on the former, but the Colts are good enough that they can still make the playoffs (in a bad division, too) with Ryan underperforming.
13. Kirk Cousins, Minnesota Vikings
While Kirk Cousins isn't the median as he checks in at no. 13, I do think he is the mean of quarterback talent. If you are better than Kirk Cousins then you can be considered above average. If you are worse than Kirk Cousins then you can be considered below average.
There are several QBs who fall in the Kirk Cousins range (including Tannehill, Ryan, and the next two quarterbacks on this list). This group of quarterbacks can't be considered bad, but aren't considered great, either. And as fitting as it is, Cousins is right smack dab in the middle of this group.