McCutchen is a superstar CF and they have a pretty good bullpen (though they only used one of their good relievers against us yesterday, and he got three consecutive strikeouts). They have been getting offense and pitching from surprising places. Most of all, though, they're incredibly lucky--they're something like six wins above their expected record.
What are you using for expected record? It doesn't seem too far off here:
http://espn.go.com/mlb/stats/rpiAlso, wow there are a lot of .500ish teams.
