Shouldn't be Bush's Swordplay ability multiplicative instead of additive? His wand and the swordplay upgrades from other crusaders are added up! Shouldn't it be multiplicative like almost everything in that game?

Or can you state why they are working that way?

I know that the number would be a little too high, but my problem is more that lack of information (and about some other stuff)! almost all the number are multiplicative, but some like swordplay is not, but where I can find the info about that? you know what I mean?

and btw I don't really get it, why the gear from bush is also added to the swordplays from the crusaders. (so the crusader upgrades are kind of super weak, comparing to Sarahs crit)