Board Thread:Versus Debates/@comment-25265296-20150827064037/@comment-4271790-20150828183818

Elveonora wrote: Kishi said Madara was the strongest and unbeatable = fact. He had to use plot to rationalize his defeat, that being Black Zetsu. People forget one thing... it was KAGUYA who created Black Zetsu, one could say it is an extension of her and it even rested in her sleeves, so I'd consider them one and Black Zetsu guess what, pwned Madara. So Kaguya > Madara in terms of pure power. In terms of battle experience and skill, it's Madara, no one is better in that department, Madara was essentially a war-machine, he spent his youth on battlefield. Of course he is. Kishi already confirmed it :x

And yes, Kaguya probably would be able to beat Madara one on one.