Depends if Craker goes in the front line or not, 1 biscuit sodier is enough to push back a g4 luffy for some time, the same g4 who toyed with dofflamingo, the biscuit isnt stronger than g4 but its good enough, like mini versions of dofflamingo.
Now watch craker making 100 soldiers and the entire army of kaido till topi ropo, and even some of them is fked.
We gotta take in account that bms crew has a lot of hax users, like mondor who can trap people, keeping them permanently down.
Smothie will take on queen, she works great vs poison-buff time opponents. Katakuri deals with King.
Jack is stalled by oven till craker deals with the majority of kaidos army.
Even if craker loses like a noob at the starts its still ok for bm.
Its all about strategy. At the end, the combinated hax abilities will deal with Kaido and thats it.
Immo its a confortable win for bms crew.