Yes there are many factors that will make a bounty to stand out. The project itself, the staffs, the progress and the consistency. The bounty hunter is also a big part of the project, on how and what way they promote the project and how popular is the bounty hunter that is why some projects invest in advertising and using big names in the industry to promote their coin/project. One last thing is the uniqueness of the project, how it interest the people and how it is useful in the community.