It's not a great stat to judge a QB by, which is his point. I mean, Prescott gets credit for a "win" against Oakland in 2017 and yet he played horridly, I mean like bottom of the NFL backup type QBing in that game. In what world should we judge that performance as strong because he was lucky enough to log a win that day?
Further, Prescott fans only like to use wins when it suits their purpose. For example, they love citing wins and losses now and attribute that to him, but in 2017, they didn't want to apply win/loss records to him then............. instead it was "well he doesn't have Zeke, and his WRs aren't good and his OL was poor, blah, blah, blah................"