Currently no, Kabuto dosent want to deal or fight with Madra at this point while he has both the Rinningan and MS dojuitsu. he got kinda freaked out and had to calm himself down. But it seems like hes on his way to get stronger even after abosorbing more of Orochimarus chakra from the curse seal.
your allowed to think what you want and not be dumb dude, on top of that this is just a forum to discuss your ideas and oppinions, if yours diffrer from somone elses your entitled to say what you feel and think what you want. The series isnt over kabuto may come out to be on top a while. But like i said think and feel what you want other people may give you crap and ask for proof but you can always change your thoughts and the way you feel.
Kabuto is not afraid of Madara he just doesn't want to start a conflict with him just as Orochimaru didnt want to fight Kakashi when he tried to take Sasuke.
I really hope so. But, in reality, Kabuto may dazzle Madara with his fancy techs but in the end, Madara will find a way to beat Kabuto. Madara's just like that, he's beast/genius..he's been around since the very beginning.