Who's better in the AFC besides Denver and maybe the Pats just because of their QB and HC
You can start with the two teams that are undefeated (Chiefs and Dolphins). Hell the Texans are the second best team in their own division.
As long as the Broncos stay relatively healthy the rest of the season, I wouldn't be surprised to see them go 14-2 or better. I could see them going 14-0/15-0 and playing their big names sparingly in the last week or two. The road to the Super Bowl from the AFC goes through Denver.