i agree with this right here. all weve seen from madara shows his ego is bigger than his perfect susano'o. no way hes gonna be ok with somebody running around using his name. i think tobi knows this too and that was PART of the reason he wasnt so happy to see the real madarahe probably doesnt appreciate people pretending to be him.uchiha ego.besides the ten tails would change a lot he'll push tobi to his limit.
he tells kabuto "do u kno of OUR plan"Tobi + Madara = Two masterminds who work together = They lead the project Tsuki No Me.
LoL i was thinking the samethingi think i'd be funny Madara would be like "YO i hear there is a guy who says they are me?" and Tobi "Uh..." *walks away slowly* "Oh i think the Moon eye plan is calling to me gtg" *Flees*