Restrict WD and Kisame takes it Med Diff.
No, Kakuzu wins this with all 5 hearts.
-Tendrils were so fast a Sharingan user like Kakashi couldn't react and said it was too fast.
-Katon+Futon is superior to Suiton.
-Domu tanks any Suiton's force with little difficulty being its hard counter, whereas the masks fly out of the range.
-Kakuzu's tendrils don't seem to use chakra, so they can take away Kisame's Samehada unaffected, while the 4 masks surrounding Kisame rape him.
-Even WD can be countered via Gian, which would yield both them dying. However, that would only cost Kakuzu one heart, in exchange for Kisame's sole heart.
-Samehada cannot absorb large scale Katon let alone Futon enhanced Katon which canonically overpowered Kakashi's Suiton.
-Kakuzu's speed is superior to Kakashi's top speed, which is his Raikiri speed; and by a long run at that.
-Samehada cannot absorb the mass scale jutsu coming from 5 directions, as Kisame not only has to react, but also has to command it to absorb the chakra. Similarly to Neji's air palm which is pure chakra, many of Kakuzu's jutsu can go unabsorbed.
I love you all, baring AkatsuiChurch and Versta.
Come at me bruh.