Let's just take the past 2 years. Teams who have made the championship game, not just the SB. Lost my other notepad that had the past 10 years and really don't feel like doing that research again, so just did the past 2 years. Which prob matters more as they keep coming out with more and more rule changes. Anyways:
2016 Offense ranking( Overall, Passing, Rushing) Defense (Overall, passing, rushing)
Packers. 7,7,20. 22,2,8
Falcons. 2,3,5. 25,5,17
Steelers. 8,5,14. 12,17,13
NE. 4,4,7. 8,21,3
2015.
Arizona 1,2,8 5,8,5
Carolina 11,24,2 6,11,4
NE 6,5,30 9,17,9
Denver 16,14,17 1,1,3
Now all you can take from that is a team with a top 5 in any category can make it, but plenty of others with better top 5 numbers didn't even make the playoffs. there's no magical formula, it's all about match ups