lol obito touched fuu sorry if you cant see his left arm but he's touching him (you brought the flame on yourself for being ignorant)
The thing is, you dont know how kamui works, let me tell you. Obito needs to solidify in order to absorb someone meaning he has to grab them to keep them close (and i mean really close)...otherwise they're out of his range. And your entire point about torune makes no sense, If obito didnt need to absorb fuu by using his arm then he didnt need to absorb torune with his arm either, meaning he wouldn't have lost it because its clearly shown that obito snuck up on him and could've easily kamuid him without sacrificing an arm (at least by your logic anyways...)
Look again, I just rewatched the whole episode and both of his hands were down, while Fu was being teleported.
Fu was distracted and Obito used this oportunity to teleport him. He didnt want to risk losing another arm, because Sasuke was just about to clash with Danzo. He might need that hand if Sasuke needed some kind of assistance.
The main point is Obito did break a sweat and there is no way you can deny it. I'm not saying Obito had any real trouble, but to say he had zero difficulty is just wrong.
I'll admit that it's an assumption, but most of the **** you've said in this thread are all baseless assumptions. For example
"Madara probably has a backup plan"
"Obito will die in the next few chapters"
Just face it, your whole OP was one bigass assumption. Most of what you've said shows that you're in denial about Madara being dependant on Obito. Madara has always been dependant on someone, whether it be Obito, Nagato, or Kabuto.
I would have agreed with you, if Madara didnt show that confident smile. It's obvious there is something he's still hiding. He has been very passive since he arrived...
But I must agree with you, no matter how obvious it looks I still cant prove it. We will have to wait and see...