But he can't hit while intangible.Kakashi can fight while intangible
Half of your point is pure speculation, like PS Enton slash, and the rest is just false interpretation built on fallacy. You know why Kakashi won and why Kaguya lost that time, not due to speed but technique and intel advantage. Kakashi doesn't have that here and that's the sole reason why he loses.Yes, I hit my head with canon scans. A canon scan showing that Kakashi wins a clash with Kaguya, the strongest individual. Yet the imagination of a Kakashi with equal amount of Rikudo Chakra, double Kamui and Kamui PS fighting on par with Sasuke sounds absurd to you.
And Kakashi's Susanoo is superior due to Kamui Shuriken. Using Chidori with his PS can also be done by Kakashi. He is also able to use Chidori, even Raikiri, which is a superior form. So he as well carries Raiton Chakra into Susanoo's hand to form Raikiri.
No, Sasuke's Susanoo is superior because he has Rinnegan techniques f.e Bansho Ten'in and Shinra Tensei that counter Kamui and Susanoo and he also has DC enough to obliterate destroy Kakashi's Susanoo with a few strikes.
The only thing that keeps him alive is intangibility but Amenotenijikara counters that as well.