Board Thread:Theories and Speculation/@comment-33959444-20180610211826/@comment-9782468-20180611022558

It's Not Johnny wrote: Thekillman 360 degree vision was not needed just to see a Shadow Clone being transported away. It should have been obvious it was Kamui rather than a Shadow Clone. That part didn't make sense.

It was shown Obito saw it was Kamui that was used against the Gedo Mazo. Same should have applied to the Shadow Clone.

While he isn't omniscient, it shouldn't have been hard to tell. Kakashi's mastery of Kamui was a lot weaker than Obito's. He was completely drained out after using Kamui on that Shadow Clone (which Obito should have noted as well), and he didn't have his Kyuubi Chakra which allowed him to transport the Eight Tails. It wasn't obvious because Kakashi mastered Kamui to a point that Obito was not expecting, and he could teleport it that fast.

Obito saw through Kakashi trying to Kamui Gedo Mazo because its head is huge and it would take longer to teleport than anything else he'd tried previously.

Kakashi's mastery of his version of Kamui isn't that much weaker than Obito's, especially since Obito has Hashi cells allowing him to use and practice Kamui as much as he wants. Obito can use it more, but Kakashi is very good with the technique himself.

Also, Obito knows Kakashi doesn't have the highest stamina. Kakashi being drained could be because of a bunch of factors, not just Kamui.