The highest numbers of parsers don't represent job effectiveness, swords are more popular than axes, in HW DRK was the most used tank despite WAR was the broken one, popularity of the jobs depend more of aesthetics and gameplay when are comparable in performance.

On the other extreme the lowest played jobs are always the ones who suffer from gameplay/balance problems, WAR is the strongers tank atm but not all love axes and PLD can compete against then with a most popular weapon.