I'm not really sure if that's supposed to mean that you are on my side or that you are my enemy *gg*
It would be stupid is Sasuke's weak level katons from the Zabuza arc can dominate Naruto's new secret-level (S-rank) wind jutsu. So if Kakuzu can even counter with a katon, it shouldn't be strong enough to cancel the effects of this fuuton jutsu.
But about Kazuku's katon canceling the fuuton.
That didn't happend yet, did it? (not sure)
If it hasn't than I'll wait till I see it happening.
But even if it can. We don't really know how strong Kazuku's katon really is.
I guess way stronger than Sasuke's old one. Just because it wouldn't be Akatsuki like to fight enemies with that weak of a technique.
"For Feanor was made the mightiest in all parts of body and mind, in valour, in endurance, in beauty, in understanding, in skill, in strength and subtlety alike, of all the Children of Illuvatar, and a bright flame was in him"