This is partly why some teams appear to have better home crowds. Seattle, for example, is particularly proud of its 12th man. Its stadium is commonly accepted as one of the NFL’s loudest and Seattle has enjoyed one of the strongest home-away splits in sports. But this should be expected, 12th man or not, because the Seahawks have consistently been one of the most mediocre teams in the league. Because there are bound to be far more average teams than elite or very poor teams, Seattle has faced many more teams of equal ability over recent seasons.