The Bills lost to the Titans in Tennessee when they had Henry AND the refs let Henry run for a long TD without calling any of the holding penalties they committed. Also the Titans had Jones and Brown both healthy. And the Bills were very close to winning.
Even if the Bills have to go back to Nashville to win the AFC, they match up very well with the Titans now. The Bills' weakness on defense is against a power running team (Colts so the next game will be tough), but without Henry Tennessee will have to go to the passing game, and defending that is the Bills strength.
If the one seed drops into our laps, great, but two would still be OK. We would get two playoff games at home and then go to Nashville and win the rubber match. It's not catching Tennessee that matters at this point, it's catching Baltimore. Maybe the Ravens' gift calls from the NFL have ended -- they actually got called for delay of game in their last game -- so it's very possible they drop a couple more.