It’s legit to use differences in location and duties to justify varying pay scales

Under the Equal Pay Act, em­­ployers can set different salaries based on geographically distinct job locations. In other words, you aren’t required to pay a manager in New York City the same as one in a lower-cost locale, even if the New York manager is male and the manager in the other location is female. Plus, any differences in responsibilities can help justify the difference.