While I agree that The Diva shouldn't be on top, I can understand why she is on top. However, I would like to throw one name into the ring - Reset. Here's why.
There are many who will argue that Lohnro was at his best in the Autumn of 2004, when he won the Orr, St George, Australian Cup then dropped back in distance to win the Ryder. Yet he fell in to win the Orr from Vocabulary. She then went to the Futurity where she was blown away by Reset. He had previously looked beaten in the Australian Guineas but fought back to beat Starcraft. Now some of you may not think that is that great an achievement - if so, go and have a look at Starcraft's 1400-1600m record. It is phenomenal. He is one horse who is badly treated by our obsession with 2000m WFA races. Take all of that into account, and to me Reset suddenly looks close to the best horse of the decade. I know he had only 5 starts, but to me he used those starts to stamp his greatness.