Strava?
My take on this is that hardtails can be quicker when you’re riding trail centre type trails (usually at a trail centre). Particularly if there’s lots of rollers and little compressions as the hardtail springs out when you’re pumping it, whereas the suspension on the FS soaks up some of the energy. I try to counter this by running high pressure in the rear shock
On rough terrain however, like the Peaks where I was riding today, the FS is indisputably faster.
That said the high pressure in the rear shock made descending Jacobs quite interesting 😐