Didn't Obito just proclaim that when his both eyes works together the true power of his sharringan reveal itself?
The abilities of his both eyes aren't quite the same, the right eye still works in short range whereas the left eye on a long distance.
So if Obito can force Kakashi's one then it works the other way around and Kakashi can force Obito for a long usage.
This means that Kamui is faster so they can warp Madara in an instant just like Obito did the same for himself,
in other words Madara gets 1 shotted.
The abilities of his both eyes aren't quite the same, the right eye still works in short range whereas the left eye on a long distance.
So if Obito can force Kakashi's one then it works the other way around and Kakashi can force Obito for a long usage.
This means that Kamui is faster so they can warp Madara in an instant just like Obito did the same for himself,
in other words Madara gets 1 shotted.