Just cuz he was winning doesn't mean he wasn't serious.
This doens't prove anything, and this wasn't my point either.
And IIRC he only used future sight that one time when he was drunk.
Because that's when he went serious.
And if he is a 100, Yamato is like a 70. Inferior but still relative
If a Serious Hybrid Kaidou using Hao Infusion is a 100, Yamato is a 50 at most. Bagua variants quite literally might oneshot and blitz her.
She did about as well as Law or Kidd did on their own against Big Mom. Heck, her Base + Hao could temporarily match Hybrid Kaido's Hao Infusion.
Bullshit.
Yamato's strongest attack couldn't do more than bring out a small stream of blood.
Kidd's attacks were able to:
Overpower Big Mom in a direct power struggle
Make her scream and could out large amounts of blood on several occasions
Break her arm
Alongside Law, make her feel more pain than she's felt in decades
Had enough raw LS to make her unable to move
Able to keep her pinned down with the sheer force of his Damned Punk
Law's attacks were able to:
Make Big Mom scream and could out large amounts of blood on several occasions
Cut through her strongest attack without even using his Devil Fruit to amp himself
Alongside Kidd, make her feel more pain than she's felt in decades
So no, Law and Kid also clear Yamato in terms of feats.