Hi, I think it was in the latest update of the Windows Tacx application update the ability to compare my ride to other cyclists disappeared.
I think that these comparisons are useful when there aren't no segments in Strava on the particular route.
To compare my ride with other cyclists is a good way to see my performance on that particular day even if I don't know on witch level the other cyklists are.
However if the number of participants are high, fx. 2000 cyclists the effort is somewhat comparable.