about the sebon not being use with magnetism in the manga.. PLOT.Alright this is not going to be in depth due to the screaming 7 year old in my ear U_U
Anyway's EjBlack Hounded PC with the argument of Hiruko being more useful then most think from the very beginning, and honestly PC never really fully countered it, EJ was right in saying that the knowledge did indeed play a large role in why the two Kunoichi broke through, Sasuke seeing an arm being launched and expecting a large group or senbon to launch at him enough so he can dodge it is very unlikely, Also the distance between Deidara and Sasuke at the start of their fight was def. Not 5 meters, that was almost laughable, Now as for the third Kazekage, the only thing you said was going to beat the iron sand was Kirin, Most of your argument was dependent on speed and shunshin's which Hebi Sasuke is indeed strong at but it does drain his stamina, which inevitably slows him down in the long run, EJ's usage of the needles in the ground was great however i'm a little skeptical as to why Sasori did not do that himself,
Anyway's if i said something weird its because again, i have this annoying yelling in my ears -.-
So My vote goes too: EJblack, He gave many reasons on how Sasori defeats Sasuke, yet PC only really gave one and that was Sasuke's best move Kirin, which i too do not think he would be able to do while avoiding iron sand world order, don't forget its range was limited due to the cave walls there's nothing to suggest it could not go farther,
So Ya my Vote for EJBlack
The sebons magically disappreared in the manga