Hmm depends for me. OP side has the speed and melee and durability while the Naruto side has the hax and eye magic. Luffy has observation haki though and so does zoro i believe so they wouldn't stare itachi in the eye and if nagato decides to do anything dangerous gear second luffy can 1hit him. Itachi's amaterasu and tsusano'o would be a problem but he can't do it forever and luffy and zoro's stamina are way above his with the ability to affectively dodge and teh speed advantage itachi would end up falling but not without taking out zoro i believe.
I give it to the One piece team in a good fight.