Board Thread:Theories and Speculation/@comment-890307-20161205161301/@comment-25122992-20161227224500

Just to note, Hashi's comment on Sakura's strength was shown in the manga as well (chp 632), though I agree that Hashi couldn't have a chance to see the full power of Tsunade since he must've died when she still was a child or at least a teenager. However, it seems that Sakura managed to master Byakugou earlier in life than Tsunade did.

Regarding Kin/Gin brothers, they were kinda the legends renowned in Kumo despite their reputation as criminals, it's actually normal that they remained unsurpassed throughout some time. But I think they didn't show anything extaordinary aside from the sacred tools' use and the mastery over Kurama's chakra, so I'd say that Raikage Darui (already Raikage version) can be skillful enough to put each of them down, either individually or maybe in pair as welll, at least if there's no sacred tools for them around.