I can destroy the argument of techniques not counting because they kill you after use.
Acording to many RDS doesn't count because it can ony be used at the cost of the users life, so by that logic Hiruzen taking Orochimaru's arms with him to the after life doesn't count.
Someone should have told Orochimaru this so that he could have been using his arms this entire manga. The fact he couldn't use his arms for most of the manga must have just been all in his head. Maybe it's from a lack of confidence from always losing to Itachi.
Also Gai can destroy any defense with his punches, because he was just shown to be able to destroy the strongest defense in the manga except for Yata Mirror, which is debatable(not really because it is divine power, but lets not get into that right now).
Gai in 8 gates would punch right through that PS crystal on its forehead killing EMS Madara before he could tell what had happened. Gai is really that much faster than anyone else. Even Juubidara got blind sided by continuous Evening Elephant attacks, which left him unable to move.