The AFC Is very close with San Antonio RDS and Sacramento very close to New York and Mexico. I think there is a number of possible outcomes but I think for any of the 6-6 AFC Teams SAC SAN RD to catch the others,
It is very unlikely that any of the 6-6 teams can go through (I am not sure Sacramento can due to head to heads) but SAn Antonio and RDS COULD go through with a few Possibilities,
NUMBER ONE
WEEK 13
Ohio Lose to New York
RDS Win against Mexico
San Antonio Win Against Orlando
Week 14
Ohio lose to Sacramento
New York Win Against Birmingham
SO who ever wins out of San Antonio and Raleigh would go through as they have a better Head to head over
Ohio
Number TWO
New York lose one of there two games and if either San Antonio or RDS Win both theres they would go through due to Head To Head
Number Three
Mexico lose there last two games and if either San Antonio or RDS Win theres it will go down to divisional record (and could come down to more precise mesures)
BUT Neither of these teams can get through if Mexico and Ohio Win One of the last two game. But the presure is also on New York who if they don't win BOTH of there last two games and Either SAN or RDS do they don't make the playoffs
I hope I have cleared up the options (I dout it I have confused myself

)