Legacy helps if you have the scores, so if 10 kids all have perfect scores and similar applications, the legacy gets into Harvard. But if you have something they want, play pretty good football, captain of the fencing team, you can get in with lower scores compared to a perfect score with nothing else. I had a big donor to Princeton tell me this as he was close to coaches and was working his daughter in. She had great scores and played great soccer. Scores have to be really high but not perfect. And I know 2 siblings that got into Harvard but it got more competitive for the 3rd, even though she had similar scores to the 1st two and had double legacy and the father did fundraising but she did not get in because the standards are higher.