Biggest Offensive X-Factor for Broncos to Beat Panthers in Super Bowl 50

Super Bowl 50 is gearing up to be a dogfight between Peyton Manning's wily Denver Broncos offense and Luke Kuechly's smashmouth Carolina Panthers defense.

Which offensive X-factor needs to step up for Denver to win Super Bowl 50?

Watch Adam Lefkoe and Bleacher Report NFL Analyst Chris Simms reveal the X-factor in the video above.