How do I calculate the strength behind swinging weapons?

[Zamasu_Chan]

Like the title says. How can I calculate someone's physical AP depending on the weapon they're using? For example, melee weapons. They all have 9-C ratings and cause more damage compared to a normal punch. So is there a way so caluculate the strength behind the swing depending on the weapon? I wanna know how to calculate this because weapons are normally much higher than physical stats.