Yea no Kurama's chakra made everyone's techniques stronger Sasuke wasn't an exception.
Wrong, Kurama's chakra has no influence over Sasuke's avatar unless their chakras are fused like a Jinchuuriki. He didn't have a Kurama cloak when the avatars combined therefore his Susanoo would
not be enhanced
Yea no PS is a EMS technique. Sasuke and Madara used it on Kurama. If you're talking about a standing PS Madara never used it till he was edo with Rinnegan. Which is Rikudou chakra.
Proof ? Sasuke's avatar looks like Madara's because they both have Indra's chakra but it didn't have the size of PS, the power of PS nor the wings of PS, therefore it wasn't PS but a pre-mature version of it, it's no different to how Sasuke's eye isn't a RinneSharingan even though it looks like one.
And read the manga, Madara's avatar was the size of full Kurama even without Rikudou chakra, while Sasuke's only grew as soon as he had Sage chakra
The manga has shown that having someone's chakra gives them the person's KKG, but despite having Indra's chakra Madara wasn't able to use Amaterasu or Enton like Sasuke.
Madara not having the same abilities as Sasuke and Naruto not having the same ability as Hashirama shows that each transmigrant inherits a separate ability from their ancestor which makes because their bloodlines have gone through centuries of blood thinning.