Since stats are tough to compare across decades (consider the changes to the rules protecting QB's and allowing Receivers to run free five yards past the line), if we just rank the SB era QB's on "Rings won" plus "NFL MVP's won" plus "SB MVP's won" and, if we get fancy and assign, completely arbitrarily I admit, three points for a ring, two points for being an NFL MVP and one point for being a SB MVP, this is what we get. (Notes: I'm just putting this forward, not as "Gospel truth," but as a way to TRY to take "opinion" out of the discussion as much as possible. It leaves off great QB's like Tarkenton and Jim Kelly because they never won an SB and it certainly doesn't give the career performance of Dan Marino its just due. Y. A. Tittle, Sonny J. and the Dutchman are left off because the vast majority of their careers preceded the SB era. It also ignores the discussion of "pre cap" and "post cap.")
Montana: 19 Points (4 rings, 2 NFL MVP's, 3 SB MVP's)
Bradshaw: 16 (4, 1, 2)
Brady: 13 (3, 1, 2--"Incomplete")
Aikman: 10 (3, 0, 1)
Starr: 10 (2, 1, 2)
Elway: 9 (2, 1, 1)
Favre: 9 (1, 3, 0--Incomplete?)
P. Manning: 8 (1, 2, 1--Incomplete)
Young: 8 (1, 2, 1)
Theismann: 8 (2, 1, 0--one ring in strike season)
Staubach: 7 (2, 0, 1)
Bob Griese: 6 (2, 0, 0)
Stabler: 5 (1, 1, 0)
Namath: 4 (1, 0, 1)
Marino: 2 (0, 1, 0) [Included for comparison despite no rings]
It will be interesting to see how NFL historians/pundits/fans rank Brady vis a vis Bradshaw and Montana if Brady gets his fourth ring. Bradshaw and Montana were undefeated in SB appearances and that might give them an edge. Tommy has gone to the big game and lost, with the ball in his hands in the final minute.