1. Amaterasu didn't nearly kill him, he shrugged that shit off.
2. Da **** is Madara gonna do to Tobi? Drop some meteors on him? You know what that's going to do? Not shit.
3. He can't do S/T tech or he would have done it already.
4. Tobi wasn't scared of Itachi.
5. That last point is irrelevant, Itachi's dead.
6. Tobi has Rinnegan and Senju DNA just like Madara.
7. Tobi has Gedo Mazo and 6 bijuus.
8. My last point, what can Madara do to combat S/T tech warping ability?
1. Is that why he was screaming and writhing in pain? Anyway, point remains Madara can use Amaterasu to stun Tobi since he clearly has a difficult time evading it. Then use another attack to finish him off.
2. Dude, Tobi was freaking scared of Madara when he saw him in the coffin. He was sweating bullets.
3. You can't say that. Then why didn't Madara release himself from Edo Tensei as soon as he was summoned?
4. He was scared of Itachi. Which is why he stayed away from Konoha.
6. Madara has infinite chakra, has Rinnegan in both eyes. Has an indestructable body. Has EMS in both eyes. Has Perfect Susanoo. He is also perhaps the most knowledgeable character alive. He has Mokuton. He can use his Sharingan to control any bijuu, and he can also fry/kill any bijuu with Amaterasu like Sasuke did to Hachibi.
7. Madara said Hashirama is the only who can stop him for a reason. He didn't mention Tobi.