This was a good chapter i give it a 3/5

,since it was all flashbacks and too short.But on the other hand it had awesome fighting scenes.
So what have we learnt from this chapter:
1.The rashoman was originally Hashirama's jutsu,which oro probably learnt by experimenting with the first's body.
2.Madara used the kuubi and shielded it by susanno,but he didn't use its stabilized form,which brings forth the question,did Madara use his stabilized form latter on the battle to bring down hashirama?
3.Hashirama was a sage and could use senjutsu.Since naruto is a toad sage and Kabuto was a snake sage,what exactly kind of sage was Hashirama? Maybe he learnt sage mode from the shikkotsurin forst,or,"Damp bone forest"!
4.Hashiramas and Madara,were exactly like Naruto and Sasuke.This indicates that Naruto would have to kill sasuke if he continues the path of revenge.Hashirama thought of Madara like a brother and didn't want to kill him as a fellow leaf ninja(like naruto),and he knew Madara form his childhood(like Naruto).
5.Unlike Madara and Hashirama,Naruto was always the underdog in every situation while sasuke was the talented genius.In their childhood,Madara was the underdog while Hashirama was the talented genius.
What do you guys think of my points?do they seem legit?
I have a theory that maybe during a battle Hashirama accidentally killed Izuna or for some reason was resposible for Izuna's death.But this could be all wrong.
p.s for all of those who flamed my theory which suggested hashi had sage mode,cuz it seemed the reasonable powerup for him to compete with Madara,
SUCK ITTTT!!!