Excuse me genius, this thread was about Superbowl odds, which are based on opinions and perceptions of teams by talking heads so to speak. The oddsmakers don't have a crystal ball that the rest of us don't, they are just informed and have opinions, just like all talking heads do.
The point is the perception of this team as a whole outside of Dolphin nation is not as high as it is among some fans here, they do not put on their blinders every year after Wannstedt underachieves and gets outcoached again, nor do they ignore the fact that early reports say Jay Fiedler(someone the world knows is an inconsistent quarterback) appears to be leading the QB race.
Combine the above with the rest of off-season fiasco and most "talking heads" don't see Miami as a Superbowl favorite.