Board Thread:Naruto Discussions/@comment-38792431-20200226192508/@comment-9782468-20200303155933

@Guja3run I'm finding it hard to decipher the intent of your comment, so I'll reiterate some points and try to clarify some things that I can make out from your reply.

The rank always denotes difficulty to use. Raikiri is harder to use than Chidori. Does that mean Sasuke's Chidori will be overpowered by Kakashi's Raikiri? No, it means that Raikiri as a technique is more difficult to master than Chidori. Sasuke can put more power behind Chidori though.

Just having a nickname is one thing, but the fact that they're different ranks implies that Raikiri is harder to use. Since they're essentially the same jutsu, it's probably that Kakashi refined further than Chidori, to the point where it was that much more difficult to use.

Essentially, if you wanted to teach some random Shinobi Chidori and Raikiri, Raikiri would be harder for the Shinobi to learn. While it's not explained in detail why, it's probably just refining the technique to its pinnacle.