The Marlins don't scare me.
I don't agree with most of your matchups though. Renteria is a much better overall shortstop then Furcal. He's a better clutch hitter, hits for more power, fielding is pretty close (Renteria has won some gold gloves, not sure about Furcal).
Pitching wise I think we are better (from starters to closer) then the Braves.