User blog comment:Crimson Marauder/Origin of Vampires???/@comment-25942629-20151218150038/@comment-25942629-20151221033053

Heritage is important as well. Even though Krul is older than Lest, Lest claims to be stronger than her. Mika is also abnormally strong, especially for his age. It is entirely possible to have a younger vampire outrank an older one because of this.

Even if the humans weren't "flourishing," there were still plenty to go around and be turned into vampires. It's not like the vamps really had any shortage of prey.

Considering all of this, I really don't think there is a paradox. I really want to know how the vampire lore works in this series, but it seems to be rather traditional.