I don't think Yaya is owning Eva. Eva is still a name that everyone knows and yaya had a failed movie and an olay ad thats pretty old already. Eva is getting a lot of work as a TV personality. She isn't doing too much modeling anymore, but she has way more star power than yaya and more staying power than most of the other winners!
Yaya is still very pretty, but she isn't doing anything that is going to keep her working in the future.