After much consideration I feel this group would be one of the few who could take Itachi on in a fight with a good chance to win. They all have great experience on the field, also they all have a natural rapport with each other as to the extent of there skills and abilities. Despite the advantages that Itachi may possess (EMS, Susanno, Etc.) if anyone cold find the weakness of these techniques it'd be Shikaku. Though not reguraly shown, he has demonstrated analytical abilities beyond anyone else on here. He'd be able to properly coordinate all their attacks to gain the maximum effect from them.