Personal headcanon - Warrior of Light's echo allows access to alternate timelines of itself. When they talk about you facing a Primal by yourself, and then 7 others show up? That is you, you, you, you, you, you, you, and yourself. You are the Roegdyn, the Lalafell (and all the other races), the man, the woman, the caster, the melee (melee-ier?), the gatherer, the crafter, all of them. The Warrior of Light's explosive skill and power growth is because every "player" is adding a bit a power and knowledge to the rest through the echo.

EDIT: Way after the post I meant to be replying to, sorry.