These are the three biggest keys for both the Pittsburgh Steelers and the Green Bay Packers to win Super Bowl XLV.

#1 Who will win the battle in the trenches?  The Steelers' offensive line is banged up but capable.  The Packers' offensive line is capable but faces two elite pass rushers in James Harrison and LaMarr Woodley.  The team that wins this battle will have a great advantage.

#2 Who can run the ball more effectively?  Rashard Mendenhall is the best running back in Super Bowl XLV.  That doesn't necessarily mean that the Steelers will outgain the Packers on the ground though.  Slowing down the Steelers' rushing attack could benefit the Packers greatly.

#3 Who can punish the quarterback more?  I believe that if the Steelers can hit Aaron Rodgers, they will win this game.  Big Ben is a tank.  Roethlisberger will not be affected by a physcial pass rush the same way Aaron Rodgers would be.

If the Steelers can disrupt Aaron Rodgers and Green Bay's potent passing attack by physically punishing him, I believe they will win.  Steelers 24, Packers 21.