Us humans are super good at distinguishing faces. So what's obviously different to us might not be so clear to an AI or another species.
It would be interesting to test a bunch of midwesterners at their ability to tell Asians apart or to be able to distinguish various Asian ethnicities. My guess is that a lot of the distinguishing features that they look for are altered or missing.
It's true that we're good at recognizing faces (even where there are none), and distinguishing on a basic level (type of animal) but specific faces are mostly cultural.