1. They have better communication skills.
2. Their keywords have clicked the right way.
3. Their titles are well chosen and are captivating.
4. They have worked on their profile.
5. Their articles are better rated.
6. Their profile is high rated thus drives more traffic.
Please do let me know if the comment was of any help. If I can be of any further assisstance message me at NaimaBilal.hubpages.com.
I shall be glad to help.