From the June layoff the average age was 44. The median age was also 44. Breaking the ages down into 10 year brackets (20-30, 31-40, etc.) showed a perfect curve with the tallest point being the average/median. It's quite clear that there were quotas to fill across the age spectrum. Nike had to sacrifice a number of young people to get rid of us older employees.
Exactly what @QcTQipc-1adh said. If Nike was willing to get rid of its best employees to save a few bucks on their salary and replace them with cheaper greenhorns, getting rid of a few younger people just to insure there are no grounds for age-related lawsuits is par for the course. This only goes to show that nobody is safe at Nike, not the long-term employees with higher salaries nor the new hires who can be sacrificed at any moment at the altar of shareholder satisfaction.