User blog comment:Bioniclepluslotr/Weapon Stats Tables and such/@comment-24737457-20150201231901

The Source: https://docs.google.com/spreadsheets/d/1z3-syTEbrn5J2FKt_2yAEuHjsQ3DXtzbW_tTdCvAyo4/pubhtml

As for the +/- things, they don't really matter all that much, just look at the number and think. "That's bad and this is good" and make a judgement on whether a variant is good or not...at least thats what i do, if you can, try it, it helps