Getty Images We’re just on the cusp of thinning the playoff herd. Come next Sunday night, we’ll be in December, and the schedule will be 75 percent done, and we’ll be able to figure out exactly who’s nearly in and who’s on the way out. As for today, I can tell you which team had the best Week 12: Seattle. The Seahawks won the kind of game they won four and five years ago, when they seemed dynastic, in beating Carolina 30-27 in Charlotte. Now, in the middle of New Blood City, the playoffs seem real to the 6-5 ‘Hawks, not just a dream. Even though they’re the current seventh seed, the Seahawks play four of their last five game at home—three against bottom-feeders Arizona and San Francisco—and own positive tiebreakers against fellow 6-5ers Dallas and Carolina. And Seattle has a quarterback who wants the ball in his hands the way the great ones do when it gets loud and impossible on the road. Bill Walsh once said he loved taking his team on the road, because it was 45 men against a team, a city and a region, and when it got close at the end of the game,…