The video here talks about the difference between the two approaches. There's a comparison at 2:50.

"I think the computers are winning, because in the upper right you can kind of see that back wall, there's a little strip of green. It's kind of blurred out a little bit too much with the human version, but the neural network has picked up on that and kept the vertical stripes there."

https://news.developer.nvidia.com/ray-tracing-essentials-par...