The Heat are a good team, but they are far from great. They might have three of the most talented players in the league, but that doesn't automatically make you the best team in the league. Yes the Celtics did have a big 3, were the best regular season team, and won a championship all in the same year, but that was with a remarkable supporting cast. The Heat are a solid team and will have a decent playoff run, but that is a far cry from what they were expected to do. They will not win 70 games, they are not the best team in the NBA let alone the Eastern Conference, and Lebron isn't the leading candidate for MVP, I believe that honor belongs to Derrick Rose. They also have not played very well against the better teams. They will steamroll through the first round, but I think they will be done after that.
There is always one team that makes a big splash and makes big moves. Some times, like the '09 Yankees, the team goes on to win a World Series. Other teams, like the '08 Tigers, miss the playoffs completely. This years team is the Red Sox. So far however, their moves don't seem to be paying off. It might be too early to tell, but they just got pounded in a three game sweep by the Rangers. And by pounded, the Rangers were hitting Home Runs everywhere. Unless they can get that part figured out, the Red Sox might be in for another long season.