For anyone who says Carr is just a stat padder and don’t win:

Carr is definitely the best QB they've had in recent years, but there's not a huge difference between 63-83 (.415) and 12-22 (.353). It's the equivalent of being 7-10 instead of 6-11 on average.
While wins/losses are important, they aren't a great metric for individual players. Like, Joe Burrow is having an MVP type year, yet they didn't even make the playoffs, much less win their division. We all know Burrow is much better than his record indicates. And we've seen lots of top shelf QBs struggle to get wins because it's a team game.

But yeah, it's about a 1-2 game difference per season, so I wouldn't use that. Something like QBR or similar would be a better metric as to how well or efficient a qb is playing.