Board Thread:Theories and Speculation/@comment-36512555-20200101053037/@comment-32685487-20200302181001

We also need to remember that even the "perfected" Edo Tensei used in the 4th War couldn't bring out the actual full power of the ones revived. As Edo Rinnegan, Wood Release Madara was losing to Edo Sage Mode Hashirama and could not break out of the God Gates, yet the moment he came back to life(also lost his Rinnegan, which are supposed to grant more power) he instantly broke out of the God Gates and overwhelmed Hashirama showing that even when coming back to life and losing his eyes in the process a living Shinobi outclasses their Edo form in every single aspect inlcuding speed, except for health/bodily regen and chakra regen speed. So a living, full eyesight, Healthy Itachi would be an entirely different level altogether than Edo Itachi and Kabuto would not have landed those surprise attacks nor lasted as long as he did.