This is the closest we have in terms of physical : digital sales split. PS leading with 52%, PC is second at 27%. If we allocate everything else to Xbox, it would be 21%. A ratio of 2.47. PS vs. Xbox console sales would roughly be a ratio of 2.40.
There were some other more recent data post-COVID that showed that digital downloads jumped up to 70% on PlayStation. Because of the high PS userbase (~120 million) vs. Xbox userbase (~50 million), even Xbox has an 80-85% digital sales ratio, the end-result wouldn't be much different. The overall digital sales would still be around 70% in favor of PlayStation and 30% on Xbox.
In your link shared, there is the results for 2020 in UK for Digital, Retail in UK = > https://www.gamesindustry.biz/artic...games-sold-in-the-uk-in-2020-uk-annual-report
So, in 2020 for Retail:
- PS4 = 37.4%
- Switch = 35.1%
- Xone (+Xseries) < 27.5% because we obviously need to take in account the PS5 that is not negligible in this part.
- PS4 = 41%
- Xone (+Xseries) = 26 %
- Switch (Nintendo Games are not included) + PS5 + PC = 33%