I lifted these numbers from a post in MarlinsBaseball.com (http://forums.marlinsbaseball.com/topic/97002-so-what-now/) ...
Marlins Performance vs. League Average
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Ca: OPS .600 vs. League Average OPS .702
1B: OPS .586 vs. League Average OPS .776 (Wow!)
2B: OPS .708 vs. League Average OPS .708
3B: OPS .784 vs. League Average OPS .741
SS: OPS .720 vs. League Average OPS .694
LF: OPS .731 vs. League Average OPS .772
CF: OPS .738 vs. League Average OPS .730
RF: OPS .893 vs. League Average OPS .791
PH: OPS .821 vs. League Average OPS .706
We've only used 5 starting pitchers so far, which I think is pretty lucky health-wise, with an ERA of 3.99. Our bullpen ERA is 4.59.
We're mostly average, with two positions well below average (Catcher and 1B) and one position well above average (RF).
Our team defense has been average (http://www.baseball-reference.com/leagues/NL/2012-standard-fielding.shtml)
Forgetting in-game strategy for a second, this tells me that we're not performing well individually. That means we're just not a very good team, which is the GM's fault, or we're not being motivated properly, which is Ozzie's fault. We're "lucky" to only be 3 games under .500 with this kind of performance.