Board Thread:Theories and Speculation/@comment-26545929-20150630030815/@comment-3568954-20150630212333

Jiraiya is the strongest of the 3 even Kishimoto says so the databooks(yes i know some people don't like using the databooks because of inconsistencies) but none the less they are considered Canon and are good base points for character discussions

kishimoto had Tsunade and orochimaru listed as 35 in total stats where in Jiraiya was a 35.5 meaning he was the strongest of the 3

Uchiahmasters

itachi's databooks stats have him listed as s 35.5 and jiraiya as a 35.5 as well but the stats do not account for battle experience Jiraiya would win an all out battle as jiraiya has more experience and he also had more chakra and stamina that itachi

Kyle Ethan

all though she is a senju and an uzumaki she doesn't have more chakra than him the databook has her listed as a 4 in stamina(stamina is a rating that combines both physical stamina with chakra into 1 rating therefore stamina accounts for chakra level) Jiraiya on the other hand has a stamina rating of 5 meaning he had more chakra than her