It works this way:
you kill dracons for 2 APts. You get some SE for the fight (this IS increased by spectral manipulation so if its not maxed its worth turboing!). At the end of the event, we calculate how much SE you would have received if you hunted instead for that 2 APts. Subtract what you get for killing, and get the difference.
For example. You get 300 SE for the dracon. On the average, you would receive 2000 SE for 2 hunts. So you will get 1700 SE worth of ability increase at the end of the event (approx!).
There is one thing which doesnt matter, possessing Tower of Power, the other modifiers are included (we suppose you answer all quiz questions correctly).
In addition to this SE, you get relics, healing potions, golden ducat potions also your pets gain exp in the fights.
If you still think it doesn't worth it, don't do it
If you want the exact mathematics, stats, etc - sorry, we can't give that to you...