As far as we know, and can calculate, your mb (miscellaneous bonus) only affects your chances of winning/losing a battle.Anybody know how the Misc. Stat effect party hits and if so to what degree? Like it whatever % of max add an amount or is there some math to it anyone knows?
It isn't shown to influence plunder at all, let alone with enough accuracy to actually calculate its weighting.
I like your question, though. Shows good curiosity and thinking about game mechanics.