Lanefan
Victoria Rules
You need both. The numbers drive the narrative, and the narrative drives the numbers; and when you're only given one of those things to work with you need to be able to - and are kind of expected to - supply the other if required.You look at NPCs and see numbers. Everything seems to boil down to a number to you. It doesn't need to. I only use specific numbers when I need them for game mechanics.
It's a different approach. I envision a fantasy world first with mechanical implementation to enable interaction with that world. I get the impression you look at everything as a game first - numbers, ability scores, so on first and then add the trappings of a fantasy world on top. It's like a game of Risk with more complexity and flexibility.
So if an NPC is described as "brawny, a bit dull-witted, resilient but clumsy, and a bit grubby-looking", that vaguely tells me what five of the underlying numbers might be: St 15 In 8 Wi ? Dx 8 Co 15 Ch 9.
By the same token, if an NPC is described only as St 15, In 8, Wi 11 Dx 8 Co 15 Ch 9 that gives me some groundwork on which to build the narrative description I'll relate to the players if they meet him.
The problems come, as others have already pointed out, when a module gives you both types of description for the same NPC and they don't agree. In these cases all you can do is arbitrarily pick one and ignore the other.
And what both types of description don't give are any idea as to height and weight/build, which are usually the first things noticed about someone.
Lanefan