Board Thread:Versus Debates/@comment-43403813-20200102180859/@comment-32685487-20200127165345

https://naruto.fandom.com/wiki/Mirrored_Sudden_Attacker_Technique, no it's not.

He also is the only known user of

https://naruto.fandom.com/wiki/Amplification_Summoning_Technique

https://naruto.fandom.com/wiki/Magic_Lantern_Body_Technique

https://naruto.fandom.com/wiki/Rain_Tiger_at_Will_Technique

https://naruto.fandom.com/wiki/Shapeshifting_Technique

I think its more likely the reason is that he created these techs. Going by the fact he used Shadow Clones in the anime and by the fact that he created such techs, any sort of cloning tech should be trivial to him.