Quote Originally Posted by Barraind View Post
Not exactly, but you are correct on parts.

Leveling roulette, combined mob kills and bonus xp, is set to give a specific amount of XP based on Clvl. The higher level the mobs, the more xp per kill, which means less xp from the bonus. The lower level mobs, the lower xp per kill, so the higher the bonus ends up.
For some reason this statement made me realize that normal Ifrit, Titan, and Garuda are in Leveling Roulette. I remember I usually don't like getting those because for some reason, the xp bonus appears to be much smaller compared to getting a proper dungeon. Though that could be attributed to a lack of mobs to kill + their relative fast clear rate.