I got this on Library no problem. 22,994sP AND You earned 1 QuestPoint! You can spend it here! AND Multi-Strand Gathered Gold Necklace Your bonus sP for this quest was 4,599 thanks to your buff!

And Maleria too!

34,700sP AND Pink Balloon Headband Your bonus sP for this quest was 6,940 thanks to your buff!

It looks like it is just letting you know how much of it was a buff. For example my buff on one of my quests was 7192 and if I times that x5 then I get 35960 which was my reward.

Not needless at all! I had to do the calculations to make sure myself :D Locking this as resolved!