User blog comment:IamJakuhoRaikoben/Chapter 279: The Door Hidden in the Darkness, Review./@comment-3422455-20120414143044/@comment-3290324-20120414144759

No I don't think it's necessarily that they get stronger faster, but that they are more focused on training. Everyone else in the secondary guilds likely got stronger not by sitting down and making a conscious choice to train but by gaining experience through seven years full of battles. But FT made a conscious choice to do nothing but train and improve their skills for 3 months straight.