Edo does not equal real strength

[Kazekage35]

It was never a fact that Madara gained his stamina from Edo Tensei.




Im not quite sure you understand me here... I agreed that Madara is owning because Kabuto UPGRADED him. I just think that all his stamina was originally his, because you cant really upgrade stamina. Edo Tensei brings you back in your prime. Kabuto gave Madara Hashirama's abilities (at least most). Edo Tensei regenerates your body, so you cant die. It was never said that it improves your physical capabilities, in fact saying it brings you back in your "prime" pretty much confirms that what we're seeing now is his actual stamina.

Stamina is durability... edo regenerates you faster which means you can last longer

 

[Michael92]

They are also said to be depended on the user/summoner. Being as Kabuto is able to handle the Edo Tensei much better than Oro, one could only think that if Kabuto were able to summon Hashirama and Tobirama, they would seem much more stronger than they were when Oro summoned them against Hiruzen.