ESPN has put out a confidence ranking for each NFL team’s quarterback situation. This is a ranking based on a few different factors, not just a ranking of the best quarterbacks in the league. Here is their brief description:
This is not merely a ranking of starting quarterbacks. This is a ranking of teams based on how confident those teams are in their quarterback situation as a whole. That means it includes the reliability of the backup situation, the injury history (recent and otherwise) of the starter, the long-term plan at the position … lots of stuff other than just which starting QB is better.