Anbu Captain at age of 13
he didnt improve from there, all he got was MS when his Anbu career ended
Yes, pretty much. It was a different time back then. As noted in Part 1 during Sasuke's flashback arc. You see it also with how fast Kakashi went from genin to jonin because of the war.
Itachi fans will say he is 'GOD' level
But for me he is Kage level, he is more intelligent and skillfull compared to Kakashi.
Nah. All his fans say he's Kage level. His trolls are the ones who say he's a deity.
Kakashi became jonin prior to Sharingan so he must be stronger than Itachi
Scan pleaseItachi had his own natural talent (thanks largely to his bloodline and KKG), his father to train him and Shisui (a world renowned shinobi) to mentor him.
Hiruzen said he felt uncomfortable putting children in the ranks of defending the village but the Leaf's numbers were low in shinobi so children like Itachi, Kakashi, Obito, Rin, were sent to the front lines in the defense of the village.