So is Pathfinder (i.e., the "D&D 3.75e") what FKR has in mind when it comes to the massively over-complicated systems? This would line up with @pemerton's earlier hypothesis.Justin H/Aboleth overlords blog
"When playing Pathfinder are you negotiating the fictional world, or are you making decisions out of a priority to game the numbers?"
That said, I suppose a counter question for FKR would be, "When playing FKR are you negotiating the fictional world, or are you making decisions out of a priority to game the GM?"
The more you get to know your GM, the more you get to know what sort of tricks, tactics, and such that they use and how to win their favor. Or what are the usual sort of magic words to get past the NPC. So there comes a point, IME, when some gameplay in D&D can be about playing the GM. It seems as if FKR would be more prone to such tendencies. The invisibility of the rules heightens the visibility of the GM.
(Bracing for impact from fellow posters assault, now)