Chidori never pierced through the Raikage armor.They did cut it just not through it applied pressure and strenght it'll cut all the way through. And they don't use lighting like Sasuke's his sword technique is better than theirs. You re-read the manga Sasuke has the Sharingan he can charge against anyone and see their counters. And nothing is said about chakra not passing through Kimi bones obviously Samurai can chip away at em Chidori that pierced Raikage is gonna slice through Kimi.
And when i mean a straight chidori would be a total fail whenever Sasuke uses his Sharingan or not, the bones from Kimi body will appear, not like the bones have his own will but kimi doing that, piercing sasuke face?, body? whatever is closer.
Sasuke "sword techinque" is the same as theirs not in style but in power yes, didnt Mifune attacked Sasuke at the submit? The difference between the other samurais and mifune is the abilities not the brute power which imo have the same, only applied in different ways.
You are underestimating a healthy Kimmimaro.
Ofc sasuke wins due the Oro powers.