I thought the last part could've been more insulting then anything. The part about Iranians being able to pass. But seriously, that is pretty ridiculous. Somebody has asked me if Brazilians speaks Spanish or Brazilian. That is not a cause for me to be offended but more sorry that the person doesn't know enough about the world to know that we speak Portuguese.
It seems reasonable to me that players who trained in particular regions might tend to have particular playing styles.
I know there was a lot of political maneuvering that had to be done to allow an Iranian to get into the NBA, so perhaps there is a bit of concern. Seems like overkill to me. There is nothing in what they said that is connected to any stereotypes about Iranians.
I also think we should never ask whether people could find something offensive. The answer is always "yes". The better question is whether the statement is perpetuating a culture that harms certain groups. I don't see that in the comments of the announcers.
The Borat comment perhaps was the worst in my view because it had a "they all look alike" feel to it.