This question can be answered in the same way in which you answered the question “What can yoy tell me about yourself?”. Try to focus on five to six skills that would enable you to succeed in this position. Clearly point out the chief differentiator in you. This question is also a chance to cover your mistakes during the interview. You might say something like “You may have interviewed other candidates with better technical skills than mine, and I appreciate their knowledge of the subject. However, my skills would enable me to better succeed in this position than other candidates.”