Literal headcanons. Red Roc was used once and its flames barely did shit to Kaido, and he was caught offguard. No sold by Warcury
Zoro dragon blaze cut a horn and only had Kaido and Big Mom commenting about how Oden's magic blade was carrying Zoro's ass
"That is no ordinary sword!!"
Kawamatsu pulled out similar feats with a fodder sword
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Meanwhile base Sanji with Zoro's EoS opponent
As i said, you're making things up, stop embarrasing yourself