This is false on so many levels. Gear in this game is vertical, which means there is a best set of gear, period. FFXI had multiple sets of gears for different fights. There is only so far "skill" can get you in the game. There is a ceiling on most end game fights that requires a certain ilvl to pass, you can have the best rotation in the world, it won't matter if your DPS isn't up to speed.