Board Thread:Versus Debates/@comment-27418151-20160124021607/@comment-27671485-20160125212447

hashirama power was misunderstood by the shinobi world,they didn't comprehend how powerful hashirama was.In fact, his true power was left to legend like the Sage of the Six Paths, mere fiction. In actuality, the Five Kage were left stunned when they saw Madara's true power. Even Tsunade was baffled at how her grandfather could possibly fight him, showing even Tsunade did not know how strong her grandfather was.

So the character that did the statement that hiruzen was the strongest hokage of all time,probably didn't know how hashirama wa,also in the databook only said that hiruzen was the strongest kage of his generation. Likewise, Dan explained that the Five Kage couldn't beat Madara, and only Hashirama could