Board Thread:Versus Debates/@comment-31810758-20170513174308/@comment-3965545-20170525200651

Itachi's performance as an Edo shows you a glimpse of what his chakra levels were like when healthy. He was using MS techs including Susanoo with no problem whatsoever. Edo's have unlimited chakra level refills, but that's only when they reach 0 chakra it starts to refill instantly. So Itachi being healthy is much better than you think.