I have a theory on how Odium will win
I think that at the end of Book 10 there will be an epic showdown with Odium, where the Knights Radiant have some hitherto unrevealed plan, it appears to work perfectly, but at the last minute Odium will have an epic monologue.
Something along the lines of:
"You little things scurry around so, meddling in affairs you cannot hope to comprehend. Do you not appreciate how much simpler, how much better, how much kinder, life would be without thought. Without the endless motion and chaos that leads only to pain?
A stick cannot suffer. Nor may a stick know guilt, or remorse, or shame. Sticks are at peace with themselves. Sticks have a pleasant woody aroma, so much more tolerable than the fumes that emanate from your fleshy carcasses.
You guys should totally become sticks. just sayin'
Signed, your Pal Odium"
All the Knights Radiant turn into sticks, and Odium rules eternally