That's great, but I wonder whether SE Asian people are any better at telling e.g. what European country someone is from, or what African country etc. It's a bit shit but we all look the same if you look from far enough away. Like, I'm Greek but I have fair hair, skin and eyes despite most people in the UK expecting me to be "olive skinned" and I have friends who could easily pass for Swedish, or, conversely, Libyan or Pakistani. You just can't tell.

E.g. one of the Mongol invaders from Medieval Total War II had a soundbite that said "You all look the same to me!". I guess we all do.