I still find it a bit hard to believe that Itachi is stronger than Orichimaru, though Orichimaru said it himself. When Jiraiya and Tsunade were fighting Orichimaru i don't believe they were fighting with all their strength. So Orichimaru, Jiraiya and Tsunade should still own everybody introduced so far. They aren't called Sannin for nothing. We shouldn't take it serious when someone gives an estimation of the power of another shinobi. Unless it is proven in actual combat .