After my dismal performance on the alllooksame quiz (which seems to be down, at least from here in China), I thought I was mistaken about being able to differentiate between CJK. Having lived in China for a while now in a major city with a large Korean population, I think I'd be much better able to distinguish (provided there's no Weight Watchers-like manipulation of the photos).
It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming...