Q: Does the AC bonus of the swordsage (from Tome of Battle) stack with the AC bonus of the monk, even though they are both based on Wisdom modifier?
A: No. The swordsage’s AC bonus, allowing the swordsage to apply her Wisdom bonus to her armor class, mimics the ability of the monk’s AC bonus. Since these abilities share the same name and have the same effect, they will not stack.