Itachi(Alive not Edo) would murder Kabuto in any form. One way: Susano'o. He would just hit Kabuto with the Totsuka Sword and seal him in the Gourd. Another way would be to use Tsukiyomi leave him there then kill him in the real NV. Or Itachi would use his speed and Katon techniques. If that didnt work... He would use Amaterasu.
Itachi's movement speed isn't that special. Furthermore Kabuto can just use his detection abilities to evade what you've mentioned.
If Sasuke's speed didn't get Kabuto, then Itachi's won't. Also Katon would be countered by Suiton.
Amaterasu would do nothing, Kabuto would counter it how Hebi Sasuke did.
Tsukiyomi: It puts him in an alternate dimension of his ( I guess thats what you could call it) and he would be mentally damaged further than he already is.
What happened to the fact Kabuto can cover his eyes?
Speed: He is somewhat of a fast character of the NV.
You are completely wrong. He's got a 5 in speed in the databook, but that covers movement speed
and reflex speed. Itachi has reacted to things far better than he's used movement speed to blitz people.
Kabuto, Sasuke, Kakashi and Naruto managed to intercept Itachi when he tried to charge at them.
Katon: He is a skilled expert with his elemental.
Kabuto has access to three elements; Suiton, Fuuton (through Orochimaru) and Doton (through Jiroubou; he also used one against Tsunade). Being skilled with one element won't cut it.
Edo Tensei: Itachi would do the same thing he already has done so that wouldn't work.
Unless you mean get Sasuke to back him up, then this is probably a very silly point. Edo Madara and Edo Nagato could end Itachi almost instantly; the sheer numbers would destroy Itachi.
Sage Mode: He has a couple justu that might leave Itachi tired and might get the upper-hand for a short while but Itachi would recover.
Incorrect: the two Sage Jutsu that Kabuto put Itachi in very bad positions. Itachi survived because of Sasuke's presence.
Edo Itachi would recover if he was hit with the jutsu, in a short while. Living Itachi would be near crippled, or even dead.
Sound 5 and Orochimaru justu: The only thing that might let him win would be Tayuya's genjustu unless Itachi could break out of it through unknown means.
Are you talking about the same Tayuya's Genjutsu that Itachi needed Sasuke to help him get out of?
Kabtuo no longer has Sage Mode or anyone else's justu so Sound 5 and Orochimaru & Sage Mode doesnt matter.
Who said that? Kabuto took Orochimaru's chakra and Orochimaru took his own chakra away from Kabuto. Kabuto still has all his powers because his chakra (thus his power) was untouched; Kabuto was still summoning Edo Tensei before he took Orochimaru's chakra.
This was made due to the idiots that say Itachi would die in a 1v1 between him and Kabuto.
Only, Itachi would. Edo Itachi would as shown by the fact Sasuke saved him a lot of times- this isn't factoring Edo Tensei being used in battle.
Living Itachi would be huffing and puffing half way through the fight, so that gives you an idea on how he'd fair off.