What he means is Sharjah,Abu Dhabi and Dubai are all totally seperate States and when I mean States I mean in the European sense not the 'United' one. Get an atlas and read up on it because lack of knowledge like that will only embarras you at the interview stage. There are new start-up operators in Abu Dhabi and Sharjah but EK has Dubai pretty much sewn up.
And invest in a good dictionary!