User blog comment:Kaido King of the Beasts/Chapter 896: After Beating the Mochi, Pop into the Oven/@comment-24850639-20180302165349/@comment-30887974-20180302211018

Well about Brulee. When she appers in Seducing woods she is confident about her abilities but Cracer tells her that Big Mom does not trust her to handle Straw Hats on her own so her being the punchbag is believable. Why she was going heads on with Luffy is becouse her devil fruit powers lets her mimic the power of others and Choppers monster point fightning was becouse of the homies around.

I see that most inportant thing about the conclusion in Luffy vs Katakuri fight is Katakuris question: "Are you gonna come back here to defeat Big Mom?" When Luffy answers YES (for short), Katakuri seems releved. So what I think is that Katakuri has been bored in his days of being the strongest and he finally finds a worthy opponent so if Luffy would have said no, he would have killed him on the spot. But now he surrenders so he has somethin to look forward to, a new fight with Luffy when he comes again.