Lexar Japan published a new video where you can see the difference in performance between XQD, CF and SD cards in the new D5/D500 cameras:
https://www.youtube.com/watch?v=yEUeRqA41E8
The video is over 8 minutes, so here are the actual test results (number of shots taken displayed on the graph):
Nikon D5, Lexar XQD 2933x vs. Lexar CF 1066x memory card test:
Nikon D5, Lexar XQD 1400x vs. Lexar CF 800x memory card test:
Nikon D500, Lexar XQD 2933x vs. Lexar XQD 1400x memory card test:
Nikon D500, Lexar SD UHS-II 2000x vs. Lexar UHS-I 633x memory card test:
You can see a similar Nikon D4s test here.
Thanks Stefan!