It's a C, not a good C either. C minus! Which is good for a team that hasn't gotten even a D for some time. Your report is about how much effort you have, you do get distracted a lot though at times. You often underwhelm when there are expectations exceeding your abilities. When you try, you're really quite capable and we trust next year, with a few adjustments, minor of course, that you'll begin putting it all together successfully.
A long while back a mate and I reckoned that FWIW, 13 wins was a B. 15 an A. Of course you can't talk about Super Bowl without playoffs, so a grade probably has merit because you didn't win the SB! A couple of teams have lucked out as division champs with losing records but from memory didn't progress? A couple of teams have made divisional games from 8-8. I can't recall a SB from there. There has been some teams win SB with a C minus record, got in the playoffs and the won the lot. The Giants won from a poor winning record, to back up with a regressing record thereafter. It wasn't like they got hot until the playoffs either.