I love that they’re talking like this. To me, true humility is knowing your weaknesses AND strengths. When they know they’re special and they have a shot to do something incredible, it pushes them to try and hit that goal even more.
I’m glad they’re not doing the “We’re just another team” shtick. No, this team IS special - they should realize that and capitalize on the opportunity because not every team is built like this one.
I’m right there with you. When people say stay humble, they’re really talking about avoiding hubris. But like you said, we understand our strengths AND weaknesses. There will be no hubris from this team.
But you can’t win anything - and I mean anything - without belief. The best players believe they’re the best, the best teams believe they’re the best. The best coaches believe they’re the best. Belief is probably the most important quality of a champion.
It also helps when the refs believe in you 
hopefully they remake ‘another one bites the dust’.
After we win the SB! 
Simply put, they know what they’re capable of, and that their own failure to execute is the only thing that can stop them.
They are going to keep their foot on the gas and end up as one of the greatest offenses of all time. Love the attitude from the players and coaching staff.