LogFAQs > #974618116

I can kind of understand it in this case, just so fusion works more consistently (the alternative would be having weapon power stated accurately, then having the hidden multiplier weapon power gets now applied to fusion items' stated power amount when you attach them). It also simplifies comparing weapons to each other: Higher weapon power=more dps. The damage per hit varies, thanks to the hidden multiplier, but if you've got a spear with 20 power and a greatsword with 20 power, they're going to be doing roughly the same amount of damage overall.

Well, at least that's the theory. I'm not 100% sure how it plays out in practice.