Madara was the leader. Pain was obeying Madara. Pain may be stronger than Madara, but Madara can easily beat him. Idk what you mean by "Stronger". So called stronger people have been beaten by "weaker" people
But Madara and Itachi have the highest chances at beating pain.
Sry for double posting
Yes dude, I was just proving the Pain fanboy wrongly.. he's ain't just listening.
Madara was surely controlling Nagato, giving him orders.. kinda made him like his puppet.
Here is a prove, look what's Madara saying to Konan:
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"What was it that convinced the two of you to betray me?" so, what does that mean..? it means that they betrayed Madara's orders, they betrayed their leader..
And in here:
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Konan confirmed him as the true leader when she said, "Do you understand why we betrayed you?"
Well, no need to more clarification I guess..