His argument for Kid being a fraud was actually pretty good lmao
He asked everyone who was stronger, Law or Kid, 99% of the people said Law
then he asked if people think Law is as strong as Luffy, 85% of the people said no
So he concluded with the idea that if Kid was meant to be an equal or stronger than Luffy, he is a fraud, because he is weaker than Law who is not as strong as Luffy