I got into an argument over a similar topic last week.
There's a sense in which every game is "critical" or a "MUST" win game, because we control our own destiny.
The Steelers had the same record as we did and were a viable candidate for Homefield Advantage? We play(ed) them...and won.
The Colts are our biggest rival and the greatest historical threat to the Pats? We play them.
We're tied with the Jets for wins and second to them in the Division? We play them.
So, logic says each one of those games has implications for how January plays out.
The same logic says that every other game we play, whether in the Conference/Division or not, is also an important game, because if we lose and someone else wins, we might be back behind the eight ball.
My reaction to all of this is to say, yeah, sure, fine, I get it. But I really don't want to focus on January or Homefield. I saw my first NFL game in 1960 (the Philadelphia Eagles last Championship team), so I've been following the sport for a long time and know how important Playoff Seeding can be.
But, I think we're better off just taking every week as it comes and letting January take care of itself.
That doesn't mean I don't understand how important Homefield can be, I mean just ask the 2001 Patriots, the 2002 Bucs, the 2004 Patriots, the 2005 Steelers, the 2007 Giants, the 2008 Steelers or...oops...I'll get back to you on that...