Show that you have the skills and experience to do the job and get great results. You never know what other candidates offer the company. You'll find yourself sitting in a room with the hiring manager and having to answer difficult questions about your experience and qualifications for the position you're looking for in the company. Interviewers ask questions about why they should hire you to assess how you qualify for the job and how you fit in with the company.
If the hiring manager explicitly states that he's really looking for someone who also has certain skills, answering this question by demonstrating that you possess those skills will only strengthen your qualifications in the interviewer's mind. You can get straight to the point with your answer to this question by ideally describing in detail how you can provide immediate relief for a particular pain point. Remember that employers hire workers to solve a problem, whether it's increasing sales, streamlining processes, or creating a brand. The hiring manager is trying to figure out why they should hire you instead of others who are waiting to be interviewed, and if there are a lot of candidates, this answer could make your interview a success or a failure.
For this method, you'll want to find the meeting point between what the hiring manager earns and what's there for you if they hire you. Select five to seven of your strengths that closely match the requirements of the position and use them as a basis for your answer about what sets you apart as a candidate.