Jounin as a kid..how can you consider that fodder where most people aren't jounin till adulthood, and even still a lot remain chuunin
yes but like 1 or 2 days after becoming Jonin he ended up with the Sharingan, and had his fighting style revolve around using the sharingan (copying ninjutsu, predicting enemy attacks, Kamui, etc)
And the Chidori is easy to counter without the sharingan, and no you can't even say that "Oh, he had Chidori/Raikiri for a while so he would be accustomed to the tunnel vision it causes" argument, because he always used Chidori with his sharingan, so without it he wouldnt be able to handle that kind of speed and see the enemy counterattack coming, even Lee (who specializes in his speed and taijutsu admits that he couldnt handle that kind of speed without "gifted" eyes