Bloodline Grades
Jake was tempted to give a spontaneous answer, but when he seriously addressed the matter, he realized that it was far more complex than the little alien's casual tone suggested.
Of course, it wasn't as if he had never wondered about it. When he got his own bloodline, his first instinct had been to compare himself to others. Xi had been remarkably forthright at the time, allowing him to position himself properly in the bloodline hierarchy.
However, Jake was only an Oracle Sergeant at the time, and the information he had access to was still rather limited. Even with Xi's patient explanations, he had repeatedly found the gradation of certain bloodlines inconsistent.