I was just looking at CB modding. According to the wiki, the 4 <attacker|defender>_ai_<victory|defeat>_worth parameters all set the minimum warscore to offer/accept defeat. But looking at vanilla CBs, some have values of 150 or 200, with no modifiers that could possibly bring them down to or below 100. If they are capped at 100 effective value, what is the point of having them higher? And if uncapped, how does one get 200 warscore?
On a related note, the wiki also says that targets of the Make Tributary CB "may surrender immediately upon war declaration". But the worst case has the defender_ai_defeat_worth at 1.9% warscore, not 0. Do they ever actually surrender immediately?