Interesting, what were the main differences which the technology made to the photos?
In this case,
Compared to previous camera:
1) VR in the body of Z6 allowed hand holding of 400mm + TC.
2) Zoomable EVF allowed better focusing
Compared to Canon:
3) Better dynamic range resulted in better and less noisy exposures
4) Colors are generally better
There are probably a number of other small advantages as well. I don't think it is surprising to find that new technology can help produce better photos.