After reading this, it truly cements how STRONG division wins are for the playoffs.
Note this week 13 scenario from cbssportsline on the AFC South possibilities:
Indianapolis (8-3) has won four in a row and looks as if they are headed for their second consecutive AFC South title. The Manning touchdown machine should keep rolling this week as the Colts host the Titans. With a current two-game lead over the Jaguars and a season split already in the books, the Colts are further advantaged by having a big edge in division record (3-1 vs. Jags' 2-3). An Indianapolis win against either Tennessee or Houston (Week 14) will require Jacksonville to best the Colts on overall record, unless the Texans can somehow catch this duo and create a three-way tie where the Texans have a strong division record (3-1) and have a win in hand against Jax and can still split with Indy. In case you're curious, a three-way tie at 10-6 would have the Texans winning the division title due to season sweep of the Jags and better overall head-to-head record among the three teams (3-1 vs. Colts' 2-2 and Jags' 1-3).