Mayfield reminds me a lot of Brees. A lot of the NFL "measurables" weren't there, and he was a bit of a gunslinger in college, but he seemed to make his team better. He seems like the type that will play with that chip on his shoulder. Also agree that the Manziel comparison didn't really fit. Manziel was a scrambler who kinda played QB. Mayfield is a QB through and through.
Granted, the Browns may ruin him; it's what they do.
Also, I didn't really watch Oklahoma this year. So maybe I'm talking out of my posterior.