I thought Orchi said that Itachi is stronger than him now... meaning that since he has no use of his arms he would be stronger. We will see who is the strongest out of Itachi and Jiriaya in episode 85.. and from the preview it looked like Kisame and Itachi was running away.

And goes for Tsunade I think she is going to be pretty equal with Orchi and Jiriaya. But I think her ninja style might be completely different. Like Orchi, Jiriaya, Hokages, and Itachi are all strong but in different ways.