According to Raglan's characteristics of an epic hero, the most heroic of the four heroes was Oedipus at a score of 21. The 10 characteristics that apply to him are according to Raglan’s profile were: 
Oedipus 21, Theseus 20, Romulus 18, Heracles 17
 1. Mother is a royal virgin
 2. Father is a king
3. Attempt to kill hero as an infant, often by father or maternal grandfather
4. Hero spirited away as a child 
5. Driven from throne and city 
6. Reared by foster parents in a far country
7. Is victor over king, giant, dragon or wild beast
8. Becomes king
9. For a time he reigns uneventfully
10. Has one or more holy sepulchers or tombs