Hashirama is "Anti Bijuu" meaning naruto's Sage Bijuu mode wont be much help ( worst of all his mokuton dragon drains chakra) meaning naruto if he is caught he is probably done, naruto will be stronger eventually but atm hashirama would home school him.
Except Madara absorbs everything Naruto has since he now has Sen'nin Mōdo and then throws in a few Susano'O shockwaves to kill Naruto. As for Hashirama, I believe you missed the part where basically all of Hashirama's techniques can restrain Kurama and absorb it's Chakura.