Ay wins mid difficulty. If he can dodge amaterasu, I see him dodging jinton as well considering Onoki can't properly aim it at such a small and fast target. Flying in the air allows Onoki to avoid getting blitzed but Ay doesn't need to attack Onoki as he can outlast him.
Onoki will have to try immobilizing Ay by touching him and using weighted rock technique but if Sasuke can only touch V1 Ay, I can't see Onoki, nor his rock clones, being able to touch V2 Ay.