As a side note, Baker Mayfield has already surpassed Tim Couch in yards and is now in 5th as the All-Time Passing Leader for the Browns. He is in 5th for TDs, as well.
He should easily pass Frank Ryan before Christmas in Yards and own 4th place, with only Kosar, Otto, and Sipe ahead of him. He isn't likely to move up in TDs this year, but he will pass Bernie Kosar in TDs next season, and *maybe* Frank Ryan.
He is already ahead of those legends in Comp % and QB Rating.
So, folks can say what they want about Mayfield, but he is just beginning his 4th season and the only people better than him in all of Browns history are the Team Legends. He has surpassed everyone else in that loooooong list in every meaningful way.
Oh, and he is tied for 7th All-Time in GWD: Game Winning Drives. His next one ties him with Otto in 5th place.
https://www.pro-football-reference.com/teams/cle/career-passing.htm