Description
Intelligence is the ability to apply knowledge to manipulate one's environment or to think abstractly as measured by objective criteria. While brawn is always helpful for fights, someone with brains may show superior.
There is no way to reliably quantify intelligence, and even these rankings are just suggestions and guidelines for pages. It is more important that a page discusses a character's intelligence and gives feats for their varying skills than have a solid ranking, though it may help with quickly summarizing their overall intellects and how they measure up to others.