obviously not, if CoA can protect pre timeskip zoro's swords from mihawk, there's no reason why it shouldn't work for queen?
but it's most likely just a result of oda's trash and inconsistent writing.
because pre-timeskip zoro was hitting mr. 1's steel body, kaku's tekkai, and kuma without using haki but his swords didn't break.
the germa metal bodies are
"augmented with steel skin" and it should be easily bypassed by good CoA or enough power
this is something that zoro surpassed two years ago.
queen failing to cut sanji just comes to show how trash he is.