I think the AI drawings are far better than the human ones.

The human ones are basically a collage of items accurately created to a strict specification, while objects in the AI-drawn ones are all integrated and more artistic and creative.

Although this is probably because the humans were people motivated by money who were paid to spend 15-30 minutes to make the artwork and just tried to check off the requirements (I can't possibly imagine a decent artwork being created in 15-30 minutes).

It's very interesting though that humans are more robotic than neural networks!