User blog comment:Miskos3/Fairy Tail Chapter 320: Roaring Thunder, Review/@comment-49.176.2.253-20130222143229/@comment-5668006-20130222153515

Mr. Wayne is 100% right, the guild masters are not the strongest in their guild, for example, Mavis is a tactician, not a strong fighter. Now she did have fairy glitter and fairy law, however in terms of "strength" she is obviously not strong physically, but strong magically. A guild master is the master because they are the most fit to lead (because of experience and leadership skills) like Mr. Wayne said. Gildarts is most likely stronger than Makarov, however he does not care for leadership. Minerva is definitely more strong than Jiemma, but she does not care about being a leader directly.