Well, this is a loaded question! It assumes you know the other applicants well enough to critique and/or compare them to you.
Personally, I'd start with saying that - in a nicer way perhaps - and continue with the qualities I know I would bring to the company.
When applying for a business grant, you may be asked for qualities that set you apart. This is your opportunity to sell yourself and get your grant.
Job fairs are designed to bring in a large pool of applicants. Downsides to job fairs are that other companies are also present. Competition for the best applicants is higher, applicants can easily compare pay rates and work conditions. These can make it harder to recruit the right applicant.
I am driven, determined to do the best in my job
There are many requirements for systems engineering jobs, including but not limited to experience, education, background, and ability to set oneself apart from other job applicants.
A person may have the edge over other applicants because they are more qualified. They may also have the edge over other applicants because they know somebody in the company or have better references.
72 degrees
It is difficult to compare yourself to other applicants if you do not know their skill sets, experiences, and expertise. Instead, you should focus on your attributes and reiterate them to the interviewer.
what is your edge among other people
There are many qualifications that you feel may distinguish you from other applicants applying for the same position. You may say you have more experience.
There so many other documentation or qualifications that are required of applicants. These includes any tertiary certificates that one has obtained in their learning and even achievement documentations that are relevant.
Possibly, depending on why the comet split apart to begin with. If the comet's nucleus heats up unevenly. Once broken apart, the gas would be released into space, and the fragments will each continue to move apart. Gravity would act to bring the fragments back together, but the mutual gravity of comet fragments would be VERY small.
A person may have the edge over other applicants because they are more qualified. They may also have the edge over other applicants because they know somebody in the company or have better references.