[Ziggurat]

I wonder about these fight ability/skill rankings for equipped weapons shown on the last stat page. Are they really useful for anything??? How much better is one unit difference between weapons? Was does a score like 40 signify here in actually fighting terms? A char with Bloodlust is rated artificially low, as it does not seem to attach any importance to the extra swing from berserking. It may miss other mitigating features like enemy impairment bonuses or stat boosts. Is it a measure of only "raw power"? I watch the rating and sometime choose among weapons using it, but would like to hear if anyone knows or has investigated an algorhythm for it.