I believe what the original post was aiming at is those that use the Abyssea leech method to level jobs but do not worry about leveling the skills that job has to be near equivalent of the job level. Ex. level 90 WAR with weapons skilled at level 30.

Admittedly, I have done the fast track for my WAR. I went from 30 to 75 in two days. I needed a place for merits. I stopped at that point and have been skilling every weapon my WAR can use. And in that process, I have skilled up my npc to max level and halfway to cap, all weapons that my WAR can use are now at a minimum of 180 if not more, only staff, club, dagger and sword were capped at level 75. Now at level 77 only sword is still capped but will not be for long. I am learning to use the Job Abilities as well. Basically, I am learning how to play the job so I can be more than just a red !!! trigger.