I already stated that they sold more copies in my first post, that is a fact.
Please. Read. Words.
Their significant, and now gradual, Player drop off is a sign of continued disinterest of that Title. There's always a spike after every PDX release, but Stellaris receives the most significant drop offs out of the other Titles. Almost as if that....."Minority" they speak of in that Toxic Forum doesnt like the direction Wiz took the game after Doomdark was removed from the Project at release.
HOI4, despite how much criticism we give them, still retain the most loyal player base, and growing. Seems like they're doing something Right.