Mets ace Jacob deGrom has been the best pitcher in the National League this season. Better than Max Scerzer. Better than Aaron Nola. As it stands right now, he should be the frontrunner for the Cy Young award.
But he might not be, because of his won/loss record. And that's the one big difference between deGrom and the above pitchers.
Scherzer is 15-5
Nola is 13-3
DeGrom is 7-7
That deGrom doesn't have nearly as many wins as Scherzer or Nola shouldn't matter, since it's not a reflection of how he's performed.