Who wins here is as clear as day n night its Kizaru.
What's more of a question is what the relationship btwn their fruits wld maen for their intangiblity. As they r both energy based n there is a more concrete relationship in that both energies r of electromagnetic form.
So taking the theory that particles of a similar vibriational frequency intract in a very physical manner these two's attacks might act more like physical punches to one another. I dont know if that part were Kizaru got pushed back by an explosion while in intangible form can b used to support this or not.