Kabuto doesn't stand a chance against Orochimaru. Or Tsunade. The only reason he was "beating" her in that fight was she was cringing on the ground in fear of blood. And when she get's over that fear doesn't she punch him like 50 yards? My memory on that isn't too shabby, but I know that she kicked Orochimaru's ass after she got over her fear..
And the people who are saying that Kabuto is as strong as Kakashi and can therefore beat Orochimaru.. Orochimaru SAID that Kabuto COULDN'T beat him because he was only as strong as Kakashi.. and when Kakashi said he'd fight Orochimaru in that hospital thingy Orochimaru was all "haha... righttttt" and Kakashi was like.. "heh, I must be crazy for trying to fight Orochimaru" <--- I remember that clearly..

By the way I meant Taijutsu. ^_^