There are times in sports when clichés ring true. This weekend in the NFL was one of those times. Football is indeed a game of inches. Minnesota fans know this all too well as they watched a potential game-winning field goal sail wide-left. It has also been said over and over again that playoff football is different. Green Bay's dominant performance in Washington was a testament to how good the Packers can be and how much experience matters in January. The rivalry Wild Card matchup between the Steelers and Bengals served as a reminder that nothing is certain until the clock strikes zero. Heavy explores all this and more in our weekly NFL power rankings. Click the arrow on the right to see this week's rankings. (Getty)