I'm just asking what percentage you believe reached 1000+ hours in PDS games.
Average playtime isn't worthless at estimating that, lol. Numbers-wise, average playtime is a useful tool for getting in the right ballpark because it sets upper bounds on the percentage of players breaking quadruple digits. If someone were to claim twenty percent of players get 1000 hours out of a PDS titles and the average (mean) playtime is 190 hours, then basic math tells everyone that the other eighty percent play it for negative hours. Obviously, that's bull****. Maybe ten percent works, but that means the other ninety percent played only ninety (which is still crazy-high outlier good) but I personally doubt that based on how many players fail to complete relatively easy but time-consuming achievements. I imagine there is a really thin crust of superfans who do have quad-digit hours played but they are buttressed by like two dozen others who don't come close.
That's setting aside that I said, "average single player game" not "PDS." PDS titles are already an industry outlier but much of that success is their DLC model keeping consistent engagement high. Bannerlord is nothing like that, for better or worse, and is probably going to wind up closer to industry average single player games because of the action aspects (which get old, quick) being front and center while everything else is shoved to the side.
What was unclear about my prediction? The daily active playercount will probably jump up around 30% like it did back in January, then fall back down within a month because the game won't change much (if at all) on release.
TW could certainly do other things to keep that high going but they've said zero about it, so I assume they are going to treat release as Game Complete and not pair it with a steady schedule of DLC, the one proven method of boosting and maintaining active playercount.