The worst kind of management seeks a single optimum, a one-scale index of efficiency, like the mindless scales of 1 to 10 for grading a woman's beauty or one to four stars for a movie's appeal.
Jealousy isn't something we deal with well, but some of us have been around long enough to know when to let go, and what is most important. The happiness of my two best friends should be more important than some ancient feud.