Kakashi: " It looked like your blow was slipping through him, but in fact, the part that was overlapping with your body was just moved to the other dimension. In other words the left part of his face that your fist went through wasnt really transparent but was simply "existing" in other dimension".
I said that Sakura discovered mechanics standing by Obitos s/t jutsu, not that she connected it to Kakashis Kamoui.
You really should read this manga more carefully. Tobi isnt slipping through attacks, thats the point. It looks like it, but in reality something completely different happens. Sakura was the first one who discovered that, and that was the first time when she saw Tobi fighting. Thats why its such great feat when it comes to intelligence. Read the quotes from manga I gave in this post, and try to understand once more what Im talking about. Seriously, are you trolling or what?
he very clear is though. the means by which he does it doesnt matter, what matters is that he becomes intangible which is very clear, not hidden at all.