Doesn't change the fact that Itachi can still use his Susano'o within the white rage. It's the same outcome, only itachi and sasuke wouldn't be holding back.
He only managed to make an arm and who would he save? Sasuke or himself? If alive or edo he'll get hit with Kabuto's Muki Tensei then use Kimmimaru's bones to kill Sasuke who would still be in the effect of just getting out of white rage. Plus if it's Edo Itachi then just release the edo tensei and that's solo right there, if alive then he more than likely can't manage to use Susanoo's hand since he'll have his disease, low stamina, he was an edo, why else was he able to use Susanoo when Sasuke, who's stronger than him, couldn't?
Kabuto was also holding back, he wasn't trying to kill Sasuke and Itachi was edo. undo Edo and Itachi is gone then he solos Sasuke. I don't agree about the PS tho, No way any of Kabuto's jutsus reaching that high upso he'll have to use edo tensei for PS.
I'm not here for the pointless debate of whether edo tensei counts or not, but you're right. If Kabuto is such a ***** that he has to summon Madara Uchiha himself, rather than fight with his own power, then yes, he would beat them.
Well if Itachi is edo then no reason why Kabuto can't summon more edos or just undo Itachi's edo, he can do either or first. Edo's are summons so, even if I don't like it, cause be used same as any other summon.
Itachi would wax that ass if so...kabuto cant handle either of them alone if they had killing intent
Kabuto didn't even have killing intent, he wanted Sasuke alive and gain control over Itachi. He could simply undo Itachi's Edo and use white rage on Sasuke then Muki tensei and that's it. It alive Itachi then same attacks (it was edo Itachi who doesn't have his disease, low stamina and MS side effects that managed to make a Susanoo arm)