Running away with your division may not be the way to go anymore. The Giants are just the latest example of a team that failed to win its division, but wound up making it to the Super Bowl. If you look a bit closer you can see a trend developing:
Nine teams have made it to the Super Bowl since 1970
--From 1970 to 1996: 4 Wildcard teams in game; 1 Super Bowl win
--From 1997 thru 2007: - 5 Wildcard teams in game; 3 Super Bowl win
Wildcard team or not, ten road wins is nothing to be taken the lightly. The Giants have a had a tough road just to this point.
Often divisions are wrapped up early enough that teams can still hold on to the lead and avoid late-season charges from their opponents. Still, the teams that end the year hot typically fare well in January.