I guess I missed that part. And both attacks do disable Susano'o but Madara still has his jutsu where he blows smoke or ashes (against Naruto and Sai) that could slow Kabuto down since Itachi could still use jutsu in Mugen Onsa which could disturb Kabuto's control. Against Hakugeki, probably depends how long it'll take for Kabuto to reach Madara in order for the decisive blow but Madara has been shown to take a huge beating and get up like its nothing so it's hard for Kabuto to finish Madara without him doing something about it.
But if it's straight taijutsu... I don't even know. Kabuto being able to liquefy and heal himself makes him really tough 1 on 1. I guess I'll give it to Kabuto in that scenario
Yeah... Now that I think about it, in Taijutsu, Madara is probably better, but Kabuto can liquefy his insides, so Taijutsu is pretty useless against him...
And also, Chakra Scalpel. It depends on where Kabuto strikes and how hard. If he gets him on the torso like Itachi, I'm not sure it'd do much damage. But say on a limb or the neck, I think it'd be a better bet.
lololol when they weren't allowed to kill him? Yeah, "real fight"
You must have also missed the part where Kabuto said he was also holding back so he wouldn't harm Sasuke. You should go read those chapters before talking, the battle begins in chapter 579.