So? He still awakened MS and developed it on his own, the time it took him to do so is irrelevant.
No proof of that. All you have is obito's and itachi's statements. None of them was aware when and how kakashi awakened it so they assumed it was him. The truth is its an unique case in history of sharingan when 2 user share same undeveloped eye.
We don't know if Kakashi isn't going blind. What he told Itachi suggests otherwise.
Yeah but obito spams it all the time and isnt blind kakashi has used it enough already and aside his statement never *****ed about his sight nor even about pain caused by using MS techs.
No. Without Senju DNA he would not be able to spam it without getting tired.
Plus he'd go blind.
Overall, he'd only be able to use it as a last resort. Obito on his "own" powers, even with both eyes, would still be at his or Kakashi's current level, due to lack of Senju DNA.
I know that w/o senju power he would go blind or lacked stamina, still being a uchiha he has better stamina then kakashi and until blind would solo any.
He was only shown to be able to cancel Kamui that:
1) is directed at himself
2) is directed at something so large that it takes a longer time
He wasn't able to stop Kakashi from kamuing a kunai, nor a clone. He also wouldn't be able to stop Kakashi with Kyuubi's cloak from kamuing the Juubi, because he had to physically interrupt Kakashi to stop him. Presumably because he didn't have enough chakra.
Obito doesnt have ranged kamui to stop kakashis attack on gedo, he could only do that via link, in other cases it was not of importance, in juubi case he countered by blocking sight and wanted to deal with kakashi once and for all.
By saying it's the same eye he meant that it's the same technique: Kamui.
Even if some parameters differ (Kakashi being able to use it long-range, Obito being able to phase) it's essentials are the same.
Kakashi isn't very emotional? That's just your speculations, Kakashi is a closed person, but he was deeply shaken by the events in his life. He was crying when he pierced Rin.
Yeah kakashi cried when a kid, unlike uchiha thou he doesnt rage etc etc, you get the point i hope, every1 cried sometimes uchiha dont let go easily, main difference.
Intangibility is skill obito developed on his own having a mastery over close ranged kamui, nothing else.
So far:
Link between the eyes.
Same design.
Ability to stop other eye.
No blindness.
Same time awakened.
Similar ability.
You cant explain all that saying kakashi awakened MS on his own while not having KKG. Another thing, obito got 2T right away, from 2T it went MS. Obito is only uchiha to do that, chances of coincidence with kakashi are null, they cant feel the same about rin.