Hi all, I am looking to fly NRT-ORD on NH. I know there are two daily flights - NH12 and NH1012. I remember before NH12 has the 777-300ER while the NH1012 had something else. But now looking at these flights, it seems that both flights are operating 777-300ER. Do both flights have retrofitted premium cabins? Is there a significant difference between the two flights or no?