You know.........I know the alpha coverage adds some more detail but was playing WoW in the Wetlands area and walking by a stream/swamp area and said to myself, " damn, I don't remember this looking this good before. So much more immersion -- so I decided to take a screenshot in this area to see for myself to be sure.
Performance Adaptive.
http://img376.imageshack.us/img376/1...daptiverg3.jpg
Alpha coverage:
http://img367.imageshack.us/img367/6...overagetz2.jpg