It's all relative i guess. Roy certainly has to be considered one of the best pure athletes in the sport. But Ali's speed and footwork for a heavyweight (actually, ANY weight) was mind boggling. At his prime (late 20's up to right before he stopped fighting because of the draft)...Ali was a thing of beauty to behold. But Roy Jones certainly will always be near the top of the list for pure athleticism. Tyson was a monster too. Obviously his incredible strength and speed...but he actually was a solid technical fighter (solid defense, cordination and accuracy as well) under Cus d'amato. We sometimes forget that because of what a soap opera his life and later career became.
Bookmarks