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The final reason that both the New England Patriots and New York Giants are likely to meet in the 2013 Super Bowl is because of who leads their team into battle.
Bill Belichick is widely regarded as one of the smartest and most football-savvy coaches in NFL history. He knows what it takes to get to the Super Bowl, and he's had pretty good success at getting them there.
Every year that Belichick is on the sidelines, the Patriots will be a Super Bowl contender.
Tom Coughlin started the season—and spent a good portion of the season—on the "hot seat". There were numerous talks of him needing to be fired.
Even if you aren't a fan of Coughlin, you have to appreciate his toughness and his ability to rise above adversity. It would have been extremely simple for Coughlin to just call it quits, but he made his team fight and brought them to the Super Bowl.
Coughlin will be in the final year of his contract in 2013, and if he decides that the 2012-2013 season will be his last, you can bet that he'll want to add one more Super Bowl title to his resume.
With both of these coaches looking hungrier than ever to write their names in the NFL history books, they'll continue to get the most out of their teams.