"Yes. It is. Owning slaves is a risk factor and most humans in Cheliax do, but far more Chelish slaveowners than Osirian ones are damned, and most Chelish nonslaveowners still are. Though the slaves typically do all right. Cheliax encourages the killing of children in the womb if you don't want them, and encourages activity that makes that inevitably somewhat common, and probably doesn't tell people it's Evil, though it is, but we don't actually observe a big gender disparity in Chelish afterlife outcomes so that can't be the primary driver. .
Conceivably Pharasma could be doing something where she considers it mildly evil to do things that produce some risk of subsequently killing a child - the way it's evil to light buildings on fire even if you suspect they're empty, if you haven't checked - but that isn't how we observe her to work on most ...irresponsibility. In Osirion's own statistics a man who frequents whorehouses is risking Chaos but not particularly Evil, though the women are often Evil.
And of course, all of this is hard to infer. We can ask people to answer lots of questions about their life and activities before they die, under truth magic if we wish, but the set of people who will agree to that is unusual, and then we only get a little bit of data from the eventual scry to see where they show up. We can identify risk factors - being Chelish is a risk factor, owning slaves is a risk factor, being a soldier is a risk factor - but it's guesswork whether the situation is 'living in Cheliax is inherently mildly Evil' or 'some routine activity in Cheliax that we don't know about is actually Evil - maybe Asmodeus is selling snacks made from human flesh and cannibalism is Evil?' or 'Chelish people have done a lot of Evil things that we know perfectly well are Evil but they haven't confessed to' or what."