If the 49ers can stay healthy, they can beat anyone in the league. There is a level of physicality on that team on both sides of the ball that no other team can match. It’s not just the defense or offensive line, even their skill positions on offense are built to beat you down. But that physical play style does wear on the body more, so you do get a higher risk of injury.
Also, it’s amazing what a difference a coordinator can make. Denver went from having a top tier physical defense the last few seasons still running the Vic Fangio defense to a soft passive piece of shit defense, still running the Fangio scheme but with Vance Joseph. Offense hasn’t even been a problem, it’s the defense.
I would love to see a Super Bowl of Miami vs SF, a team built for finesse and speed versus a team built for strength and power.