Happy to help.
There are a lot of things in human society you are expected to 'just know,' which is silly. Human social dynamics is so complex psychology, sociology, and their various related fields are possible doctorate fields, but when someone says 'How do I know the difference between, 'love' and 'love love?' people will just say, 'You just know.'
Actually, yeah, that's a bad metaphor from me. Comparing benchmarks would be comparing AI models.
He's not comparing benchmarks. He's comparing results, so it's more about maybe error rate than processing speed.
I guess it's like comparing the result of an approximation versus an explicit computation. GenAI makes an approximation of art. It very quickly spits out something that looks a bit like the intended answer. It even gets you close enough to be totally satisfactory for some purposes, in the same way 3 can be a usable approximation of π for some purposes. However, the picture is not the full purpose of creating art. Art is a form of communication, transmitting something from one mind to another using indirect means because telepathy isn't available. AI is not trying to communicate anything. It's just an approximation of something someone could say.
Miyazaki is someone with years of experience in creating art so he understands the 'language' of art better than some. He has 'fluency.' AI images hit the uncanny valley for artists because they are attuned to the difference between what an art is supposed to look like vs what the imitator approximates. They have the fluency to spot the fake the same way you might be able to spot someone speaking your native language as a mother tongue vs out of a phrasebook. Because he is 'fluent' in art, people take his words on art seriously, just as one would generally take a born-and-raised German's words seriously regarding German grammar.