Voted for "Orochimaru mid diff", he has what it takes to beat Kakuzu without much trouble and counters to all his techniques, and Kakuzu really has no way to put Oro down.
Not sure about who would win, but Orochimaru's sword of Kusanagi can pierce through diamond... just saying.
Oro has edo tensei
And also he won't have any difficulty fighting kakuzu cuz when oro can play with 4 tailed kyubi....kakuzu is a piece of cake for him
Oh really, now tell me how much do you know about Kakuzu?
Thats if he can hit Kakuzu
That's a tough one. Kakuzu is pretty underrated and he's a complete boss. But Oro is also amazing =\. It'd be a pretty epic match. Kakuzu does have superior taijutsu and chakra amount, although Oro is a bit more intelligent :s. Ughh, since Oros sword can cut through diamond and Kakuzu can make his arms only as hard as diamonds, I'll give it to orochimaru extremely high diff.