In this gambling city, expectations are that this could be the heaviest bet title game ever. LAS VEGAS — If the Baltimore Ravens are to become Super Bowl champions, they'll have to beat the odds again to do it. Bookmakers in this gambling city mostly have the San Francisco 49ers 4.5-point favorites over the Ravens in the Super Bowl, amid expectations this could be the heaviest bet title game ever. View full size This combo image made of Sunday, Jan. 20, 2013, photos shows San Francisco ... Read More