Check out BleacherReport.comVariety is the spice of life, or so they say.The Baltimore Ravens’ 34-31 victory over the San Francisco 49ers at New Orleans makes it three straight times and 10 of last 16 years that the Super Bowl has been decided by seven points or less. That’s quite a contrast from before, when only seven of these games were decided by that same margin or less.So what makes for a great Super Bowl? Competitiveness, flow of the game and memorable plays are the major factors when it came to ranking the last 20 Super Bowls dating back to the start of free agency, which began in the NFL in 1993.And as for that variety, you will notice as you read a lot of different teams on the short end of the scoreboard in the Big Game. Since 1993, a dozen franchises have won at least two Super Bowls. And in regards to the 20 contests, 17 different teams have lost at least one Super Bowl during this stretch, more than half of the league’s 32 clubs.Enjoy the not-so ancient trip down memory lane...http://bleacherreport.com/articles/1513378-ranking-the-super-bowls-during-the-free-agency-era