Board Thread:Versus Debates/@comment-34938099-20180729104842/@comment-36699565-20180826110855

We don't how Obito cast that Genjutsu. And that whether it can be practically applied in battle. Whereas Itachi has severe Genjutsu hype from many characters including extraordinary feats. Him controlling a Bijū also doesn't equate to him being impervious to any attempts at Genjutsu. He has no feat of breaking illusions and his overall portrayal in that field is poor.