BB has followed a bend but don't break defensive philosophy. Having a top 10 points allowed average is great. What other coaches have achieved that that aren't great coaches?
How come Manning's teams defenses were rarely top 10 in points allowed in an arguably weaker division like the AFC South? You do realize Brady and BB weren't the only ones who played in weak divisions, right? Did Manning put up less points on the Jags, Titans and Texans than Brady on the AFCE? Wouldn't the same "had to throw in the second half playing from behind wth bad QB's" argument ALSO apply to the Manning Colts? What's the key difference between those two teams?