Hashirama can survive bigger/faster attacks than what bigmom can produce rn. Dude repealed biju bombs/ can defeat a fast ms madara evading his hax one shot genjutsu, bm is to slow and weak in comparation. Rin Madara needed hashiramas body to stalemate a paper-wood copy of Hashis :).
Even if Big Moms escapes the seals/give them life, thats does not mean that she is gonna survive vs sage mode hashirama. The sage mode attacks will make BM explode and gg. BM is fighting rn in a small hall and she already offed 1 yr of her life, Hashirama produces seals/beasts bigger than that hall(bigger than onigashima if he wants).
Its a low diff fight.
If Hashirama was in the op world his coc would have been op, dude has so much presence and motivation that he would make Big Mom faint lol.
Even if Big Moms escapes the seals/give them life, thats does not mean that she is gonna survive vs sage mode hashirama. The sage mode attacks will make BM explode and gg. BM is fighting rn in a small hall and she already offed 1 yr of her life, Hashirama produces seals/beasts bigger than that hall(bigger than onigashima if he wants).
Its a low diff fight.
If Hashirama was in the op world his coc would have been op, dude has so much presence and motivation that he would make Big Mom faint lol.