That's hard to say.
In HxH Meruem was cited to have been able to best the very best players of various board games after having read the rule book and playing 10 matches.
His learning curve and adaptability are top notch.
How do you compare this kind of thing? How good is Lex Luthor at chess?
Meruem needed to play 10 matches with each person before he mastered the game, and got rid of the person because he had no more to learn from them. But when he picked up Gungi, Komugi was able to keep him on his toes. Even after 10 matches he didn't master the game, because Komugi was also getting better as they played.
So, even if we were to base this on x games out of ten...I'm not sure what I'd think, particularly since I'm not sure about Lex's ability.