Wait, why can't Samehada absorb Jinton? I highly doubt a single Jinton beam contains more then 6 tails worth of bijuu chakra which is Samehada's limit. As long as Samehada absorbs it within it's range and doesn't come in any contact with it; I don't see what's so far-fetched about Jinton getting absorbed by Samehada. It doesn't even have to be completely absorbed. Cutting the jutsu in half like it did to Itachi's Katon should suffice. Regardless, GSB should be more then capable of handling Jinton. Onoki isn't exactly agile either, so I don't see him avoiding the WD without any prior knowledge on it. He doesn't typically hover too high in the sky without a given reason. Kisame high-difficulty. He is simply a broken character.