Danzou got out of sasuke's noob Tsukuyomi.
jiraiya sealed amatersu
there is always a weakness to every jutsu. S/T ninjutsu is negated by another S/T jutsu . live with it lolz
Answering your own questions.Noob tsukuyomi.Of course if a technique isn't executed well it can be canceled by others.But only Sasuke could cancel Itachi's tsukuyomi,who prevailed at that.
Jirayia sealed a part of amaterasu flames that didn't hit him directly.There's no evidence that he could do so,if amaterasu had hit him.
Kamaui's Dimension I think is some place safe within earthly part. Just Imagine no 1 dies in Kamui's world. The oxygen level, THe Temperature, The Pressure of surrounding is like a perfect earthly condition. I cant imagine any one except SO6P can create that huge tangible world from ying yang release. Obito can creat a fake world of illusion via his sharingan but I cant imagine him creating a real alternate world just from his sharingan. I think Kamui's world is just another isolated part of earth where some how his sharingan is connected and he can teleport into and out of it at an instant. lolz

I was looking for logic.Didn't find any on that comment.
So if by any chance a natural disaster or a random attack was to destroy this isolated as you call it place, kamui would have no effect.
It is an alternate dimension granted by MS.In Obito's fight with Konan, she said that Obito can remain in his dimension for 5 minutes.If it was a place on earth as you claim what would stop him from staying there to eternity and beyond??
He can only stay in his kamui dimension for a certain amount of time cause as all jutsus kamui requires chakra too.And if Obito runs out of chakra he can't generate the kamui dimension.
And this SO6P argument of yours is so meh.The sage created the ninja world,meaning ninjustu and genjutsu techniques not the material world.If a justu can bypass reality or time or space,I don't see why a jutsu can't create an alternate dimension within the real one.
Of course every jutsu has it weakness but there is no proof at all that any other S/T can overcome kamui's dimension.
You're basically agreeing with me.
no sh!t sherlock
NO.
I am overwhelmed by your arguments.Your structured counterpoint and well presented evidence are leaving me speechless:|
Or not.