This is one of those self-defeating things.
2016 Dak wasn't average. He was very good.
You don't need a "very good" QB to have a "very good" QB performance.
The list of guys who have won conference championships is quite long and many average (over a career) NFL starters dot the list.
Dak's career quarterback rating of 94 would tie him with Ben R for 11th all-time if he were eligible.
His quarterback rating over the last season plus is still 86 which would tie him w Brett Favre....
Dak is 25-13 as a starting QB. Arguing you can't win with him is fairly stupid.
Arguing you can't win titles with him is just verbal pollution.
Eli Manning won 2 Super Bowls. Game, set and match.