Jiraiya was meant to be 5th hokage , although he didn't want it. What i want to know is How strong was jiraiya compared to other people (other than pein)
Itatchi and Kisame said that if they both fought him they would most likley die , and in a best case scenario he would die with them.
Orichimaru said Itatchi is stronger than him (see above :P)
Tsunade, although very strong, does not know as many techniques as jiraiya and is probably not a better fighter.
Jiraiya was fighting 6 pein bodies on his own, Kakashi and chouji and his dad had trouble killing one on his own (then the second aswell). Jiraiya killed one whilst fighting the other 5 aswell.
He was also the teacher to some of the most powerful ninja that had ever lived ... Pein and Yondaime and Naruto (especially in the last chapter). Although pein he taught a little bit of.
Jiraiya could use quite a lot of elements. Wind , Earth , Fire and water ( i think)
Still Jiraiya was basically the strongest ninja besides from Pein .. and possible Madara. He was still amazingly strong ..
(i have realised this has no point , still he's a beast)