Given how everything on Chaos is vague when it comes to numerical values, I trend towards the idea of the Knights of the Old Republic in terms of scale when I write or react to Force Users in general. Star Wars the Old Republic is a sequel to that storyline and a source for the scale of the Jedi Order and Sith Order. They measured in the tens of thousands each with smaller Force User organizations scattered between them. They were a relatively common sight, held positions of high authority, and you could expect to see multiple even at the smallest planetary skirmishes. Where ever they fought the tides would turn one way or another.
Chaos has a lot of Player Characters and a lot of past Major Factions that have centered themselves around the Force but not so many as I think would fall outside of the the KOTOR/SWTOR understanding. As said by Tefka though, all of this is headcanon. I personally want to preserve some level of awe or fear in my stories where Jedi or Sith are concerned as to the average near-human of the galaxy they were superior in nearly every way given the precognitive abilities and physical enhancements of the Force.