Let's get this straight.
"Madara needed Kuuybi" so what? Do you think that Hasharama had his SM since forever?
How many times did Madara say that Hashirama is the only one who can stop him?
Ever since Madara left Konoha Hashirama needed a power up so he probably trained his SM just like Naruto in case if Madara try to attack Konoha which he did.
Kuuybi is his powerup and someone told Hashirama about SM which made them equal in their last battle.
Though Madara seems to be a bit superior with PS on his side.
"Madara needed Kuuybi" so what? Do you think that Hasharama had his SM since forever?
How many times did Madara say that Hashirama is the only one who can stop him?
Ever since Madara left Konoha Hashirama needed a power up so he probably trained his SM just like Naruto in case if Madara try to attack Konoha which he did.
Kuuybi is his powerup and someone told Hashirama about SM which made them equal in their last battle.
Though Madara seems to be a bit superior with PS on his side.