Board Thread:Versus Debates/@comment-30426414-20170602005649/@comment-3965545-20170603013005

Itachi has chakra enhanced strength among other things. Have you read the Itachi Shinden or watched the Anime adaptation? Also as they were going away Kisame said quite clearly he knows Itachi didn't have to flee from Konoha or Jiraiya, so Kisame wasn't falling for Itachi there.