If his is true
Oda just handed out the biggest L to Luffy, Kaido, Big Mom, Law, and Kid.
Luffy, Law, and Kid was never able to damage Kaido's body or even chip a scale. While Zoro scarred Kaido with just CoA. GB woukd easily pierce and cut Kaido and Big Mom into pieces since they are far less durable and easier to damage.
Glad you understand. 25 years of OP and some still didn't get the memo, no strawhat is going to fight strong swordsmen other than Zoro. Fuji and GB just debunked the Lanji vs Admiral dream btw. Stay strong warriors of science!