I remember reading this somewhere - "There is a considerable overlap between the intelligence of the smartest bears and the dumbest tourists.". Though I do not think GPT-4 is even close to AGI it can definitely claim to be better at faking it than many intelligent beings can.
I heard that quote in the context of the difficulty of designing bear-resistant trash bins.
The difference between real intelligence and current attempts at artificial intelligence thus seem to be fundamentally the mode of learning, and thus understanding, rather than the raw knowledge and inference capability.
Or not. Nobody knows I'm actually a dog on the internet, after all.