You could say that before Naruto had Full Kurama. He'd easily stomp Sasuke at the point the OP is putting then against each other.A random Namekian sees them fighting and ki blasts their asses into the oblivion. Jokes aside, Naruto wins by feats but in my opinion they are equal just like their counterparts with Rikudou Chakra.
Bold is completely irrelevant when he doesn't have the chakra needed to awaken it, which is the whole reason the original wielder is the best wielder. Unless his chakra quality is leaps and bounds above Nagato's, then it's also irrelevant to, as his Rinnegan will be around his in scale.Rinnegan Sasuke shouldn't be compared to Nagato's Rinnegan when he has a superior quality of Chakra and awakened his own Rinnegan, but the boost with having Full Kurama is too much here, so Sasuke would ultimately lose here.
Going from the latest information that says Naruto = Sasuke, i really doubt Kishimoto cares about logic when comparing the two, he said they progress as a pair thus meaning that feats or not they are equal in his mind. Doubt there's a logical explanation as to why Sasuke closed the gap between him and Naruto without needing to get the Bijuus' chakra and the latter getting a chakra boost due to Full Kurama, Kishi just felt like it.You could say that before Naruto had Full Kurama. He'd easily stomp Sasuke at the point the OP is putting then against each other.