Yeah, but if they havent changed things from the StratOps version, you get wierd results like AMS heavy mechs not being able to reduce damage on a Yeoman's salvo if said Yeoman had all its LRM's equipped with ArtIV. I think they went a little bit overboard in the abstraction in trying to get all the firepower down to one line.
Personally, I would have made it four lines, one each for Ballistic, Energy, Missile, and Melee. (And leave out the ones that dont apply) Hopefully, that's an Advanced Rules option.