The title says all? We all know that Pain, Konan, Kisame and Itachi thinks that Tobi is Madara before? How do you think they will react if they knew the truth about Tobi? Tobi is not really Madara, its Obito
Agreed.It wouldn't make a difference .... Tobi only came in to the picture as a member for a joke, Everyone else though pain was running it! But, It turned out to be that pain was taken order's from Tobi who was pretending to be Madara ...
The only people that knew about Tobi were Zetzu and itachi ... Even though itachi though tobi to be Madara, so, only Zetzu knows the entire truth