Itachi became an Anbu captain at 13, proof:
He was still in Konoha
then here, Kisame said that:
And Itachi was 21 at Part 2, so according to this, he was 11 when he defeat Orochimaru.
Kishi really have time problem.
Look, a lot of people say that Edo Hashi > than Edo Madara. This are 2 manga proofs that it not true
1-
look:
Tobirama clearly said that they were bring back almost too their full power.
Then look:
Kabuto said, stronger than his prime so...
2-
And you know when Madara made the...
Rules: Obito now, with Ms and Rinnegan and Gedo Statue with 7 tailed beast vs Minato who is fast, smart but weak.
You know that Minato defeat Obito before but will he defeat Obito who become a lot stronger.