Madara had Susano'o longer than Sasuke. When he first obtained the Eternal he didn't awaken Perfect Susano'o. Sasuke is now headed to the battlefield it's almost guaranteed he'll unlock Perfect Susano'o there.
What does them being fodders have to do with anything? The aura around Preta shows him absorbing their attacks. Fodder or not he'll do the same thing to every ninjutsu attack.
"Aiko"
Naruto Manga Chapter 624 Discussion and 625 Predictions
Discuss Naruto Chapter 624 here and predict the next chapter, Naruto Chapter 625
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Same weapons he have now. Enton orb the size of a Biju dama, his Susano'o Arrow will be 100x bigger, Perfect Susano'o sword or Enton sword, and a larger Shield.