Underlined is not true he could regenerate even from Night Moth...Either stomp him. The gap is quite large. Naruto just completely overpowers him. Ashura's Avatar isn't even needed. His far superior Senjutsu will laugh at Obito's Onymoudon enhanced TSB's, and Obito gets ended by a Yoton Rasenshuriken. Madara could only regenerate from it after absorbing the God Tree, and that's Base Naruto using that (well in comparison to his Rikudou Mode form). Sasuke blitzes Obito before he can blink and slices him in half with his Chidori blade. Sasuke CAN damage him as he does have Rikudou's Yin, which is Rikudou chakra and can damage Obito.
Bolded is true Sasuke has the Yin chakra which can damage Juubito
I also agree with the rest of your post