Looking again, I think discipline might've dominated for Sunny's first series of rolls. The 5 from discipline and pain cancel each other out, but the 4 is from exhaustion. So the strength 5 from discipline beats the strength 4 from exhaustion, and the 5 from pain matches it. But the next-highest discipline roll is 4, and the next-highest for pain is 3. I could be wrong, but either way it wouldn't change the outcome, just the dominance.