Tharvot
Crusader for Truthiness
If that was the sole metric, then Kaep would have been in the running in '12/'13, and he wasn't.
It's not the sole metric but it plays a huge part. If QBs have fairly even stat lines, their win totals will be the separating factor. End of season awards always seem to go to the best player (or most visible player) on the best team, not necessarily the "most valuable" player in the league.