Board Thread:Naruto Discussions/@comment-26403664-20160228225013/@comment-27660682-20160302192643

Yes because I quote Black Zetsu here" a tool is only as powerful as the shinobi who wields it". He means that itachi's prowess, intelligence,  and skill make him invincible when they are augmented by a shield that turns back all attacks and an ethereal blade that seals anything it pierces. Even if the totuska blade is an absolute offense, you still need to land the blade on the target. And even by your own statement, itachi would be stronger than the remaining akatsuki members such as nagato and obito. In addition, orochimaru were searching for those weapons all his life. So they have been around for a long time and clearly there is something special about them. Then again, in databook 3 it is stated WHY the yata mirror blocks all attacks, it alters all of its properties  to adapt to each attack. That means no technique should be able to breach it because the yata mirror essentially plays copy cat on and finds the weakness everytime. That theoretically would indeed make it a perfect defense, so that supports what Zetsu says. You cant just ignore the info provided. Him calling itachi invincible with the weapons means the weapons are that good. Hagoromo himself admitted that he did not create ninjutsu, so he isnt a shinobi. He is extremely powerful yes, but that's it. So Zetsu saying what he says makes sense, and even if he only meant in the current time, there is no evidence supporting that claim.