I would consider the AF issue inconclusive. The reduction of foilage when AF is used happens on both video cards and has been talked about a few times but simply ignored. Here is a nvidia cards that shows exactly the same symptoms when AF is enabled. As you can see some of the foliage disappears when AF is enabled (something well known now for sometime). Also, as a footnote, ATI does recommend that you use in game settings instead of using CCC. This is IMO one example of why.