he's basically Tom Brady 2001 over the course of three Super Bowls. then again, nobody really considers Aikman the GOAT or even the best of his era.
another really bad one is Bradshaw, though. his career completion percentage is 51%. he threw at least 20 interceptions in a season *five* times. he completed a total of *nine* passes in two different Super Bowl wins. hell, in the back-to-back Super Bowl-winning seasons of '74 and '75, Bradshaw averaged 10 completions over six games! with a 6:6 TD:INT ratio.