I don't give a rat fuck what grade some internet dweeb assigns to Ewers' performance against OU. I know that was a bad OU team, likely the worst Sooner team since 1998.
I also know that he led our team to a 49-0 win with a 21-31, 289, 4TD, 1 INT stat line (which includes effectively running out the clock for most of the 4th quarter) after playing less than 4 quarters of college football and coming into this season without any meaningful snaps at the position in almost two years, and sitting out the last 15 quarters with an injury.
He's going to win a lot of games for us, and you and your grading system are going to be gargling his balls in the near future.