Board Thread:Theories and Speculation/@comment-26204403-20150314182903/@comment-24071637-20150314230411

Hiruzen would be proficient in anything. Case closed.

1. Neither Hashirama or Tobirama were terribly famous for their genjutsu, as Senjus their use in genjutsu would be above average but not much to write home about when compared to Itachi for example. Son of Sasuke Sarutobi reflects on everything about Hiruzen's abilities. Only Orochimaru(who was a prodigy anyway) out of the Sannin had high genjutsu skills, Tsunade and Jiraiya had relatively average.

2. Alright for regular Sharingan useage, for Mangekyo not too fun, Uchihas themselves who have presumably less drawbacks from all Sharingan useage than others still get bad consequences(unless you're Obito). Uchihas are also known for strong chakra as well as high spiritual energy.

3. I'm not entirely sure but can Sharingan be trained? Excluding the awakenings of tomoe and Mangekyo. The Byakugan can be trained in the sense of range. I don't recall something like this for Sharingan.

4. Keep in mind he was in a Reanimated State during those battles, he therefore had unlimited chakra and would be or less not be too badly affected by old physique due to his Reanimated body. Which was evident in his battle with Orochimaru and weaker Reanimated Hasirama and Tobirama.