For reporters, one important factor in job performance is a willingness to travel to where the info is, meet with news sources at whatever time and place is convenient to the source, etc.
Sometimes, it also involves a willingness to travel to dangerous and unpleasant locations.
You point up some more variables in what can make for a good or better peforming reporting. Those variables may not be sex specific, yet another truth about them may be that women and men do not have the same degree of willingness and unwillingness about them. What differencees there are may also have nothing to do with “sex discrimination” but lifestyle choices about careers that are different between men and women. For instance among unmarried reporters there may be more men than women, and unmarried workers are often more flexible when it comes to work-related travel.
Again, it is the actual data, and more of it, that proves or disproves actual “sex discrimination”, not statistical averages. If the statistical averages point to anything, they point to the need to thoroughly examine the underlying data before jumping to any conclusions about its meaning.