Honestly I think Kabuto has this if Edo Madara and Itachi are still under his control.
Obito has only just gained control of the Juubi, how many years has it taken naruto and Bee to master one Bijuu let alone the Juubi. He would not be able to fully control it or use it to its fullest potential.
Kamui is next to useless, offensively in this fight ....
What happens when he warps someone to the Kamui dimension? He is left with Edo Kage level opponents in both dimensions, many who have the ability to one shot him, whereas Obito has to seal them, something he has never been seen to do.
Obito will not win, he will hide in his dimension.