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History defines greatness. Football greatness, however, centers around one crowning achievement: winning a Super Bowl. A Super Bowl ring trumps career statistics pulled down by a lackluster season and forgives weaknesses that otherwise cripple a player's Q rating, or public appeal. Held accountable for the numbers on the scoreboard, a quarterback stakes his professional reputation on winning the big one. However, the passing prowess and on-the-field achievements of these five QBs transcend that traditional definition of football greatness.