You say the Iranians are a different culture from the Iraqis. Maybe to somebody who appreciates the finer points of Middle Eastern culture. I'm just a guy who reads the papers, I can't be bothered to tell a sunni from a shia a Persian from an Arab or a Yook from a Zook. Until proven otherwise, they're all just moslem garbage.
You won't mind being lumped in with the other Arabs, then. Some people can't be bothered to tell the difference between you and an Arab.