Originally Posted by Amuro
I think that the jutsu is so powerful that you have to have powerful chakra to use the tech. The only person known to have chakra that strong that all of the old heads of Konoha knew was the first hokoge. That's y oro experimented with it soo much. That's y Danzo needed it to do what he did..
And I think all kyf is saying is dat since his strong chakra can be compared to hashirama then there may be the possibilty that he possessed the same chakra as hashirama.