"交渉力" can also be interpreted as bargaining power. Things along the line of "hand me the scroll and we'll retreat", or the Biju bargaining that went on in the first Summit. "敏捷" can also refer to the trait of being shrewd or smart.Althiugh tbh some of the stats are stupid. Like negotiating :lol
The terminology is silly because unlike the original stat system, they try to be all-encompassing but just end up being vague. Should have stuck to the simple and clear old terms.