People who think that the 2013 team will be like 2006 probably don't grasp how much better the talent was in recovering from the 2005 firesale. The Marlins also had more minor talent in their system ready to contribute in 2006--Yelich and Ferndandez aren't ready yet.
The offense in 2006 was way better than what the 2013 team's will be. There was simply much better talent there in 2006. The 2012 Marlins had a team OPS of .690--where are the offensive upgrades? It's hard for me to really expect a net gain in offensive performance even after shedding guys like Buck, Gaby, and Lee. Perhaps the best hope is that Morrison breaks out or Stanton plays more than 150 games. Or Ruggiano doesn't regress too much. Guys like Pierre, Hechavarria, Solano, and Polanco aren't going to contribute much offense.
The Marlins ended up having one of the lowest starters ERAs in the NL in 2006. Turner is probably the only 2013 starter I'd expect a sub-4.00 ERA from.