Board Thread:General Discussion/@comment-25436862-20150610034332/@comment-5892594-20150610053908

Did you see how exhausted he was against Orochimaru? His reserves became lousy in his old age, and it was painfully apparent Orochimaru, when he was panting after every jutsu he used. In contrast, Danzo was faring quite well against Sasuke, the only reason that he failed to win being due to the absolute defense of the Susanoo. To claim that Hiruzen has the stamina and capacity to outright defeat Danzo, who has not only the skill but 10 lives (people don't seem to understand the significance of this) as well, is quite foolish in my opinion.

I think rewatching the Danzo fight would give you a better idea of Danzo's abilities, just watch his tactics as compared to Hiruzen himself. Who is the more agile one?