Actually wrong, because they couldn´t take down BM, doesn´t mean they are YC1lvl bro.
Law still perform one of the greatest feats in OP verse, both been low top tiers.
It is not like they been weak or something, it is pretty because BM is that strong.
She took these attacks pretty good, wasn´t even knocked out and the explosion most like didn´t do anything to her too.
They just got her down and took little more time, she is for sure not "defeated" as we imagine it.
The narative box judge the "defeat" based on the explosion but clearly as we know is that we didn´t even see Bm after the explosion, I would wait before saying she is truly defeated.^^