The San Francisco 49ers have turned into the comeback kids this postseason. The only team that didn't pull off a second-half rally in the regular season has done it in back-to-back weeks in the playoffs, capped by one of the biggest comebacks in conference championship game history. The Niners (14-5) became the fourth team ever to overcome a deficit of least 17 points in a conference title game, beating the Detroit Lions 34-31 in the NFC championship game Sunday to silence the doubters who questioned whether they could stage that kind of rally.