(FILE PHOTO) In this composite image a comparison has been made between quarterback Joe Flacco of the Baltimore Ravens and quarterback Colin Kaepernick of the San Francisco 49ers. The two quarterbacks will lead their teams in next month's Super Bowl XLVII. ***LEFT IMAGE*** FOXBORO, MA - JANUARY 22: Joe Flacco #5 of the Baltimore Ravens runs with the ball against the New England Patriots during their AFC Championship Game at Gillette Stadium on January 22, 2012 in Foxboro, Massachusetts. (Photo by Elsa/Getty Images) ***RIGHT IMAGE*** SAN FRANCISCO, CA - NOVEMBER 19: Colin Kaepernick #7 of the San Francisco 49ers in action against the Chicago Bears at Candlestick Park on November 19, 2012 in San Francisco, California. (Photo by Ezra Shaw/Getty Images)
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