That disregards the massive advancement in technology, hindsight, tooling and theory they can make use of now. There is a world of difference there even with the same hardware. So not comparable imo, it wasn’t for a lack of effort on Nintendo’s part.

I think more like was done all the time for console games. These days that doesn’t happen as much anymore as far as I know. But I think this shows that CUDA is not a good enough abstraction for modern GPUs or the compilers are not as good as expected. There should be no way they got that much optimization out of hand written/optimized code these days.