The NFL playoff picture is beginning to crystallize as the top teams battle to host postseason games. The strength of that advantage can inspire a team to lift its game as the Seattle Seahawks did last year when they knocked off the New Orleans Saints in the first round.
Not every team has the inherent advantages that CenturyLink Field (formerly Qwest Field) provides. The Green Bay Packers may ooze tradition from Lambeau Field, but the doesn't mean that opponents' play will suffer.
The main weapon that home crowds utilize is noise. Thus, teams that play in domes, like the Detroit Lions, have the built-in asset of a domed roof to amplify the spectators' cheering.
The following rankings will provide the reasoning behind why the San Francisco 49ers and Saints are so anxious to get the second seed in the NFC.