Oh I don't disagree. He was awful last year. But I'm going by the projections for this year, which factor last year's disaster. Maicer is about .2-.4 WAR higher than Diaz. Even more than Goins.
As for my comment about not having enough replacement level players, that doesn't really hold water. We have Getz and Tolleson in AAA, they aren't any worse than Diaz and Goins.