Quest SP shouldn't be nerfed because you turn it in on lower level class!!!

I took a couple hours to do a couple quest and turn them in on a lower rank class and got shafted on SP. Nowhere does it tell you will get less SP for turning it in on a lower class. I took the time and anima costs to run and port around and complete the quests especially on Deskunk beer quest. Ported to Glory ran to owl's nest or w/e ported to Gridania ran around all over to complete the quest and turn it in on a lvl 23, think it was a level 30 quest and got like half the SP. I think this is bogus because I took the time to do the quest regardless of what class I was on I got it completed I should reap the full benefits of the quest. I know why it was designed this way but that doesn't justify the cause.