Small sample, no? You can't tell me that Carlos Lee has made 18 OOZ plays, while Chris Coghlan has made 14, in roughly the same number of innings, and keep a straight face, can you?I think we often look at a guy who makes the "routine" plays and assume that means he's average. But average actually includes some number of really good plays too. A guy who is mediocre on the routine plays and doesn't make many really good plays is a pretty poor fielder.
I have almost no faith in these metrics. That's the bottom line. Sorry.