Kelly played in 17 playoff games--11 of those were during the 4 SB seasons. In those 17 games, he was sacked a total of 25 times. He only played all 16 regular season games 4 times in his career. He never took at least 500 drop backs and only 6 times had over 450 attempts.
Marino had 11 16 game regular seasons and played in 18 playoff games. He had 11 seasons with over 500 attempts, 3 over 600.
Playing the same game, they all took beatings. Jim didn't hold up as well.