^ not great chakra levels, Itachi like Kakashi and Hiruzen was so efficient with his techniques that he was able to use them with the minimum chakra cost.
well, IF Itachi had EMS, IF he had good health, and IF he had better chakra levels, then yes he would be better than Madara. But since Madara left the trail for others to follow, first to ms, ems and rinnegan, even though Sasuke will surpass him, Madara will always be the better shinobi to me.