Of course Kaido was going to win this fight, it was obvious from the start that while Luffy will be the one to beat him it wasn't going to happen here.
And now Big Mom is willing to attack Nami and Usopp even if she could have done it earlier, and conveniently Prometheus took that long to ask Big Mom for a girlfriend and to replace Zeus, she's also willing to attack Tama now with her thinking that she left her too, though it was really cool to see her showing more of her power and combining her Homies for special attacks.
Poor Ulti is really getting wasted alongside her Pay Pay just for Nami and Usopp. I wish at least that she could have beaten Nami before BM knocked her out but that was asking for too much.
Kid is intervening against Big Mom but his chances of victory or even of matching her are very slim, and it's certainely not thanks to someone like him that Big Mom will be stopped, though I smell other ass pulls to save him from Big Mom and/or to have her turn good again somehow.
And next chapter we may see the inevitable and dreaded encounter between Kaido and his crazy Oden simp daughter, I fear some really cringeworthy moments and another repeat of Scabbards vs Kaido just like it happened with the Supernovas.