Let's see if he displays any good haki feats against BB 
Yamato was able to draw few drops of blood from Kaido
Zoro left permanent scar while he was knocking on deaths door
If BB walks out of this without any real damage that's huge L for him

Yamato was able to draw few drops of blood from Kaido
Zoro left permanent scar while he was knocking on deaths door
If BB walks out of this without any real damage that's huge L for him
Shanks, Buggy/Mihawk, Luffy and BB are all humans.