Okay, that clears things up. Health bars are treated separately, so the only possible viable use at all might be on HP coons if at all.
Also, what the hell? Shield Breaker cuts enemy resists? (Hello EO2 Hexer with Dampen) How does the equation work? Is the 80% cut a linear cut (10% taken -> 90% taken, 100% taken -> 180% taken) or is it based on resistance (100% "resistance" = normal damage, so an 80% cut would mean they take 5x normal)? Also, which elements does it effect? Just guns/melee or all elements? (Thinking Spicy, takes 80% from water, 20% from guns, 10% from anything else IIRC)
Thanks for the clarification, the Wikis aren't that specific.