So...I assume that they all have their Jinchuuriki signature moves. Like that old guy using Corrosion style and judging by Gin/Kinkaku they also have some of their Bjiuu chakra. Combining that with the Sharingan and Rinnegan you are fucked.
But lets not forget that Kabuto controls them in the end and not Madara, they could turn on him if Kabuto wants to. Since I didn't see those black metal body piercings that the real Pains had, I can assume that Madara doesn't control them. But who am I kidding? I am using logic on a series where Sharingan> All.