Now i think you will understand what i meant when i said sasuke will not get PS.
Kishi have decided to give each ninja out of these 3 a specialty in certain thing.
If sasuke have perfect amaterasu, itachi have perfect tsukiyomi, then madara gets perfect susano.
Madara's use of susano is way over sasuke's or itachi's .
Sasuke and itachi's susano are no way near madara's.
Even Madara's normal susano have legs and arms, madara can hop over his susano, as if it is a summon.
he just put in more chakra,stabilized it and improved it to this extent :