Well to do, meaning they've got the time or expertise to accommodate my inquiry.
And it looks like you're describing enemy resistance, not enemy weakness. So in your example, the enemy Tactical Operative has 20% resistance to Smashing Damage and 25% resistance to Lethal Damage. Which means if a player attacked that enemy with that type of damage, the enemy resistance would decrease the player damage by a % of the typed damage.
I'm looking for enemy damage weakness. So, continuing with your example, if the Tactical Operative had a -20% resistance to Smashing Damage - that would be a weakness, as far as I can tell.