Board Thread:Versus Debates/@comment-28300173-20161104104110/@comment-26537507-20161109181158

Sasuke escaped what was likely a weakened version, keep in mind Itachi didn't want to kill him. It may be possible that a tailed beast could break out their jinchūriki, but I don't think that can happen immediately. It literally took Itachi about 3 seconds to completely incapacitate Kakashi.