14. Rich Gannon (overrated)
Technically, we could label Gannon as a late-bloomer, as he ended up going to four straight Pro Bowls from 1999 to 2002 and winning league MVP in 2002. But he also started his career in the NFL in 1987, so it’s fair to label him as a little overrated just because of how long it took him to figure everything out.
He spent the first decade of his career being a subpar starter in Minnesota and a serviceable at best backup in Kansas City. Yes, Gannon deserves some respect for the success he had late in his career. But compared to other MVPs, he doesn’t stack up.