Board Thread:Theories and Speculation/@comment-26204403-20150314182903/@comment-5233512-20150328122514

Victory9000 wrote: 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.

Hiruzen would still have an Edo Tensei body that is much weaker in physical strength and physical speed that an Edo Tensei of his body in his prime despite of the unlimited stamina.