Board Thread:Theories and Speculation/@comment-32617252-20171101024222/@comment-6769189-20171116001441

We don't have any proof Suigetsu has any weaker or stronger water jutsu than Kakashi. Kakashi only has water feats against Zabuza and Kakashi was way weaker back then. With a large enough water source Suigetsu can get physically strong enough to at least hold back Gyuki. I mean the water in his body alone compressed into one arm allowed him to swing Kubikirobocho without much problem.