Then I'd be inclined to think there's something wrong with the metric.
Why exactly is that?
Mike Cameron is one of the best OF'ers of all-time. I see nothing wrong with him being Top 20 defensively.
And I'm sorry if this is a rant... but I hate when people see a player high up in the ranks of a stat... and because they have something against that player, or disagree with the result, they automatically say the stat is broken.