As astonishing as it seems, the arcgis pro geoprocessings are not multithreaded.
It means that Arcgis Pro is as slow as Arcmap
Therefore Arcgis Pro is not taking advantage of the change in CPU architecture that happened since the past 15 years.
Arcgis Pro is multithreaded solely in the user interface.
The image below shows my CPU usage doing an intersect in AG Pro and Arcmap.
Please implement multithreading in Arcgis Pro Geoprocessing Tools.