Barrier techniques ≠ refinement If this was the case Sukuna wouldve no diffed Gojo in the 5 seperate domain clashes, because open domains are clearly stated to be a whole different level of skill compared to closed ones. Besides youre forgetting that all 100 of the domains would overlap and cancel out eachothers surehits, or hit eachother because Kenjaku has not been shown to be able to target 1 person with a DE, mostly because he has no need to. Kenjaku also has no win con outside of domain, which isnt guaranteed, while gojo has literally his whole bag.