I think people mix the terms “rules-light” and “narrative-focused”, PBtA is very ‘everyone defines the story as they go’ (in my experience) compared to a DM having a set story in mind which the players follow. Also compared to D&D, PBtA is very rules-light, compare a few sheets for your playbook to pages of class abilities and spells in the PHB!
I think people mix the terms “rules-light” and “narrative-focused”, PBtA is very ‘everyone defines the story as they go’ (in my experience) compared to a DM having a set story in mind which the players follow. Also compared to D&D, PBtA is very rules-light, compare a few sheets for your playbook to pages of class abilities and spells in the PHB!