Because you say it's true? Not.
Peyton set the record this year for being the worst QB to make it to the Superbowl, and he sucked in the SB, it was only Denver's defense that got him the trophy.
Facts.
Exactly Denver's D did the job, just like Brady's D or Montana's D! All this talk about all-time greats (cheating aside, not the proper thread) Everyone overlooks the teams D more importantly points against! Brady has had 12 out of 15 seasons where his team has finished in the top ten in points allowed, Montana 9 out of ten seasons! Manning on the other hand has only had a top ten D/points against 7 out of 17 seasons with both Denver and Indy! Football is the ultimate team game and defense wins championships. Unless Montana or Brady are out there making tackles they have been blessed to have excellent defenses and special teams their entire career! In Manning's playoff matches vs Brady, except for this season, Brady has always had the better D.
2003 Manning points against 20th Brady 1st Brady "wins"
2004 Manning 19th Brady 2nd Brady "wins"
2006 Manning 23rd Brady 2nd Manning wins
2013 Manning 22nd Brady 10th Manning wins
2015 Manning 4th Brady 10th Manning "wins"
and yet Manning is "3-2" vs Brady!
So all this talk about best ever and Super bowls it's a team sport! Neither Manning nor Brady or Montana were out there making tackles or playing special teams!