I dont think so. Remember last fact with Juubi ! Sasuke one hit him, hmmm next chapter nothing change he still alive. So i think it could be same with Obito.
Obito and Juubi are one indeed most certainly Kishimoto clearly confirms it by having the chapter in titled ''JUUBI JINCHURRIKI'' just like 560 is Uchiha Madara and 599 is Obito Uchiha
So you think that because ama didnt work on the juubi obito's sealing technique wont either?
I dont think that this is the case, madara was confident that he could become the juubi's jinchuuriki as well, im pretty ssure that the seal used is the one that rikudou used.