Not only is Q remarkable consistent year to year, but also start to start. Last year he gave up 2 or fewer runs in 21 starts. The previous year he had 19 such starts. In 2014 it was 20. He is the definition of "gives your team a chance to win".
For comparison, Sale had 18 last year, 19 in 2015 and and 18 in 2014. Not trying to say that Q is better, as Sale routinely goes deeper into games, and if I had looked at 1 ER or less Sale would have been better, but Quintana gives a team as good a chance to log a W as anyone. He is not just an "innings eater", he is a damn good pitcher (I know everyone here knows that and no one is discounting his talent. Just ranting) There is no way that Hahn should panic and reduce his asking price.
Just for fun, last year's Cy Young winners: Porcello had 16 starts of that quality and Scherzer had 23 (obvious advantage being in the NL)
I also know this is a very arbitrary way to look at this, I thought it was just a way to show just how good, effective and consistent Quintana is from start to start. This is not any measure to really use for anything, I was just looking at his game logs and noticed it so I decided to look at some others.