This is going to be a tough Superbowl.  Very physical, and probably the toughest opponent the 49ers have faced in all of their six appearances.  This is a different NFL from the era that the 49ers won their first five SB's.  It's very rare for a blowout game anymore, like the 49ers did to Miami, Denver, and San Diego.  The AFC is no longer the weak conference that didn't win a SB for 13 seasons.  I hope the 49ers do blow the Ravens out, but be prepared for a very close game that comes down to the very end.