Meateaters are superior to herbivores, Fighters in the ring are superior to watchers &spiderman is superior to street-thug. If creature is thought through atributes like fe. in D&D, this blog consentrates mostly on fysical superiority, but other atributes are also touched.
In my world citizenship/being a legal human being would lot harder &this would simplify the world. Even I might not make it trough rigorous filters; to be considered human, entity has to:
1 § be able to sit in lotus position
2 § be normal weight
3 § have iq-score over 100
4 § have full healt (no diseases)
5 § must not believe in Jesus Mohammed as their saviour (aka. religious sanity)
Defined above might be demands for elvens though..