pain or nagato was a master of using rinnengan while madara's version is stronger as he has more chakra nagato still used its abilities better. madara hadnt used the abilies like nagato does. yet he can use susanoo which nagato can not, why is that? if rinnengan allows susanoo then nagto should be able to use it as well. also the his susanoo splited into two. how can that be?