If you don’t know the answer to this question, an employer is not going to take time to figure it out! The answer to this question should be included in your cover letter, resume and all forms of communication. Think for a moment of the VALUE you bring to the table. Review your experience and credentials and determine how they will benefit a future employer.
Even if you have identical credentials to someone else, what makes you better? What has been said about you in past performance reviews? How would your boss, peers or subordinates describe you? What did you do to earn promotions, raises or special recognition in your career? Those are all reasons someone SHOULD hire you over your competition!