What does having zetsu-uchiha body have to do with anything?
Kakashi decked him with a normal body suffering from incompatibility with the sharingan.
Guy with his average body and no jutsu negated his kamui with nunchaka.
Konan with a bunch of paper nearly killed his rikudo body.
Itachi almost killed him while dead.
Minato and his average body almost 2 shot his rikudo body.
Yes, he's very average. You keep repeating 'rikudo body' like that has any meaning when it's never helped him against the average bodied person even with kamui in most those situations.
Irrelevant.
Obito with Rikudo's body is able to use Inyouton which is Yin/yang release enabling him to breath and create life into thin air. ( not on rikudo's level of course).
His chakra reserves are unimaginable, only comparable to bijuu jinchuuriki's and Hashirama.
His knowledge of Narutoverse and techniques/jutsu's is incomparable.
He posses the sharingan which can copy jutsu's and track movements, No doubt about it, he knows more than thousands of techniques.
He posses Mokuton which is an astonishing jutsu (not on hashirama's level of course)
Obito without kamui is still very powerful, Kamui just adds to his legendary statue.