The sidebar graphic itemized average salaries in other sports as well:
One explanation for the higher salaries among men's lacrosse coaches is the larger roster size for men's lacrosse teams. In fact, salary differentials are not unlawful if they are based on nondiscriminatory factors such as squad size. Yet it is clear that there is more than squad size driving up the relative salaries for men's lacrosse coaches. Because if the size of the salary was tightly correlated to the size of the team, we would see women's track coaches outearning men's track coaches by a similar order of magnitude (instead of only ~2% more). It's likely that other factors are entering into the equation, and it's hard to ignore the likelihood that sexist assumptions about the relative value of men's sports is coming into play.