Board Thread:Versus Debates/@comment-26104757-20170303072554/@comment-3965545-20170305034427

He wasn't just weakened with terminal disease.. in this fight he was already near death. the sickness made his chakra tier only a 2.5 and he still did all the things he did.. so Itachi has scary chakra control and precision to be able to do what he did in that state.