Canon delivered a firmware update that significantly improved AF, especially EYE-AF on the Canon EOS R. So, how does it compare?

YouTuber Xing Liu compares Eye-Autofocus performance of the Canon EOS R (with firmware 1.4.0) with the new Sony a7R IV. The Canon RF 85mm f/1.2L was used on the Canon, the 85mm f/1.4 GM on the Sony.