So, I've used implosion a few times and it's great. It's a real killer against any enemy with a large health pool. However, I have noticed that when it says it will do "75% of target's current health" as damage, it doesn't. For example, fighting the final boss. They have 2000 HP on normal mode. Implosion only does 500. That's 25%, not 75%.
Is there something I'm missing? I doubt even the final boss has mechanical damage threshold of 1000 and that it took that from implosion's damage... Or does it perhaps have 66% mechanical resistance? That second one seems much more likely.