We have reached the point in the NFL season where some overreactions aren't overreactions at all. At this stage, they're appropriate reactions. By Week 12, we have some sense of how the playoff races will shape up, which teams are real contenders, which teams aren't and which games matter.
For example, everyone knew Sunday's Titans-Patriots matchup was a big game. Tennessee came in with the best record in the AFC (though, without basically its entire offense), while New England was surging and just one game behind. This was the kind of game that absolutely could end up mattering when it's time to figure out who plays where and when in January.