Also got to find out WHEN they did this. At the beginning of 2.0 the FATE train was so strong that was all people did and could level up very quickly. they skipped all sorts of content though and didnt do story or dungeons or any of that, just straight FATE train. I wouldnt doubt that this was how people do the quick leveling. While it may work to get you to max level it doesnt teach you how to play the class in a party setting, you dont earn your 5lv skills, and you miss out on the majority of what the game actually has to offer. People getting to 50 in a few days are min/maxers, only looking for the single most beneficial portion of the game then focus solely on that. I wouldnt worry about competing or replicating it, play the game at your own pace and have fun.