you show Parra has a .375avg & .375 opb - I'm sure those are slightly different, but either way you could not be more right about the sabermetric approach for leadoff.
who cares about the guy's power or speed. CAN HE GET ON BASE. a leadoff guy should have AT LEAST a .350 obp or your team just isn't going to score many runs.
and btw, parra can hit for power & run, too. you can't sit the guy in my opinion.