Okay, didn't obito say that the sword he wielded reflectedbits power based on the users feelings? Well obito had allot of doubt within himself so the sword was very weak to begin with. That's why kishi showed obito remembering his older dream. It shows the doubt within himself. Its the reason he lost and the sword shattered.
Anyhow, I don't see how obito could have not just obliraterated the susanoo/kyuubi combo. Its not like it was any bigger than it was. He could have easily grabbed the cloack and did the same thing he did to sasuke and susanoo all over again.
Or he could have just summoned the juubi and defeated them both - difficulty.
Like seriously, even hashirama and madara could easily destroy naruto and sasukes combo. The ultimate troll indeed.
Anyhow, I don't see how obito could have not just obliraterated the susanoo/kyuubi combo. Its not like it was any bigger than it was. He could have easily grabbed the cloack and did the same thing he did to sasuke and susanoo all over again.
Or he could have just summoned the juubi and defeated them both - difficulty.
Like seriously, even hashirama and madara could easily destroy naruto and sasukes combo. The ultimate troll indeed.