I wonder why people keep repeating this? From 2000-2021 (I can count this year since neither QB this year is on a rookie contract), the SB winning QB is on a rookie contract 31.8% (7 of 22) of the time. The SB losing QB is on a rookie contract 22.7% (5 of 22) of the time (or 27.3% combined). 6 of the 7 SB winning QBs are probably future HOF QBs (Brady 2x, Rothlisberger, Wilson, E Manning, Mahomes) with Flacco as the other. Of the 5 SB losing QBs, you have Wilson as future HOF probable with McNair, Grossman, Kapernick, and Goff. Best way to win a SB is to have a HOF level QB on a rookie contract. The second best way is to have a HOF level QB. 2000 is way too early to use here. This is a very recent trend that started with Seattle, then worked in Philly and Kansas City. You've seen what's happened to Philly and Seattle and KC will follow. It's not winning the Super Bowl either, it's the fact that way more clubs have a willingness to toss the young QBs in immediately and get value off that first contract. But I find the numbers you used pretty convincing of the argument anyway. That's a lot of quarterbacks. That most of them end up really good isn't a detraction, it's the premise of the argument. You win with a great QB you don't have to pay. Further, Brady skews the whole thing anyway, because he's never been paid like the 10x conference champion QB he is. The Patriots domination helps make the argument itself.