Which I think is just as misleading, in the opposite direction. They're both extremes.
Why not compare it to how many people have completed Ultimate on any one specific job.
Comparing clear rates across 17 jobs combined, versus one job, isn't exactly balanced.
People may just not like how Blue Mage plays... just as I don't like how Summoner or Paladin play. Which is why more Limited Jobs to engage in the same content as BLU would be beneficial.
Beastmaster would even fit into the theme of arena battles in Uldah and in acquiring a Morbol as a pet, thus also gaining the Morbol Mount for lvl 60 savages.
Btw, going by your signature. Are you saying they should stop investing in PVP?