Lmao little man you are beyond stupid. So much for all that brain power you claimed you had. Let's go over this together, slowly so your puny brain can understand since I can't expect you to read the Manga and come to the conclusion someone who doesn't harbor an innate bias for a fictional character along with that innate stupidity of yours would.
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That is Naruto after taking the Bijuu Dama. Over half of his tails are severed. Only 3 are intact. I don't give a flying rat's ass about the anime portrayal because this is not the anime. This is the Manga. Did I say all his tails were destroyed? No. Read. I hear it helps.
Madara's PS cuts Mountain Ranges. That is Bijuu Dama level strength in the form of a blade. Naruto's Avatar can be hurt by a Bijuu Dama. That is a
fact. Naruto's Avatar almost being wrecked by a Juubi Laser doesn't change the fact that weaker attacks can hurt him. If this is getting too much for you to comprehend all at once just let me know son and we can go one point at a time. :lol
-RSM Naruto being able to block PS slashes with his tails doesn't mean that they aren't slashes that contain more power than a Bijuu Dama, it means that RSM Naruto's Avatar is that durable. This isn't RSM Naruto in case you were too busy being a moron to realize that.
Thus enough hits from a regular PS blade turns Naruto to mincemeat let alone Sasuke's.
-PS Chidori can canonically pierce an Avatar far stronger than BSM Naruto's Avatar thus it pierces Naruto's Avatar. That is simple logic. Logic that you can't even understand despite it being that simple.