Umm so how does Jiraiya counter amaterasu, tsukiyomi or susanoo. Yeah I thought so..lol, really, Jiraiya wins even against MS Itachi...
Read the post above.........I think that Base Jiraiya would beat full health MS Itachi, which most people probably find absurd but needless to say base Itachi? I think Base Itachi is pretty mid or low tier or similar compared to current ninja to be honest. Jiraiya fodderizes him with literally no difficulty at all.
Dude stop talking about tsukiyomi, the OP clearly states that this is 3 tomoe Itachi!!!!Not a chance since Itachi perfectly kept up with KM Naruto and KM Naruto > SM jiraya.
Did people also forget that tsykiyomi cannot be broken by external sources? It only takes one second to do full damage and you must be an uchiha to break it.