Completion percentage is king.

I think Miles just looks at turnovers and will play the "game manager" in place of what may appear to be a more reckless, although more skilled player. Here's why that is a bad idea (with our defense).

Let's compare Jennings (who has a terrible completion percentage) to Golson (who has a crapton of turnovers)
Our offense had 17 total turnovers, the defense only allowed 24 points on those turnovers, which averages to -1.4 pt/turnover
Jennings = 11 TDs (+66 Points), 7 Ints (7 * -1.4 = -10 points) - personally accounts for 56 total points.

Take Golson (whose td to turnover ratio is pretty comparable to Jennings, he just has a lot more of each) = 37 TDs (+222 points), 22 turnovers (22 * -1.4 = -31) - personally accounts for 191 total points.

Let's say that more turnovers wears down a defense and they allow more points.

Golson had 3.1 times as many turnovers. So we'll say a turnover costs the defense 3 times as many points or 4.3 points instead of 1.4. So instead of 222-31 you have 222-94 which equals 128 total points.

Jennings (56) Golson (128) = 72 points over a season better. Or.....
5.5 more per game.
and a record of 11-2.

So.. Even if a QB "manages" a game, if he can't sustain drives, and thus score, there is no way to hide that. YOU HAVE TO SWITCH!

Just a foot note - if you don't think we had someone capable of putting up Golson like numbers.....
Brandon Harris accounted for 51 (to Jennings' 56) points. in 44 less quarters of playing time. I think he could've scored a couple more touchdowns in 11 games - which would've made him the better choice right away.