just hear me out ppl,, i think kakuzu can beat itachi ( 100% healthy ) :
first problem :
Tsukuyomi
kakuzu have 5 hearts which mean 5 different chakra .......& kakuzu can use them to Wake him up from genjutsu
second problem :
Amaterasu
kakuzu can combined 2 element i think that enough to stop Amaterasu
& by the way itachi will never have a chance to use it coz kakuzu can easily make 3 Creatures attack itachi & leave 1 inside himself for the tsukuyomi
third problem :
Susanoo
5 element user & actually 6 coz he have steel element ( i know thats not element ) .......... i think he can break through Susanoo just like danzu did i know u going to say ( Sword of Totsuka & Yata Mirror ) but those weapons is protecting itachi from front those Creatures can attack in a long-range itachi will never be able to Catch them.... actually we never seen itachi vs a long-range attack user
fourth problem :
Sharingan
kakshi vs kakuzu if u see this fight u will know that Sharingan cant Catch up for 4 Creatures and kakuzu
............... Done
first problem :
Tsukuyomi
kakuzu have 5 hearts which mean 5 different chakra .......& kakuzu can use them to Wake him up from genjutsu
second problem :
Amaterasu
kakuzu can combined 2 element i think that enough to stop Amaterasu
& by the way itachi will never have a chance to use it coz kakuzu can easily make 3 Creatures attack itachi & leave 1 inside himself for the tsukuyomi
third problem :
Susanoo
5 element user & actually 6 coz he have steel element ( i know thats not element ) .......... i think he can break through Susanoo just like danzu did i know u going to say ( Sword of Totsuka & Yata Mirror ) but those weapons is protecting itachi from front those Creatures can attack in a long-range itachi will never be able to Catch them.... actually we never seen itachi vs a long-range attack user
fourth problem :
Sharingan
kakshi vs kakuzu if u see this fight u will know that Sharingan cant Catch up for 4 Creatures and kakuzu
............... Done