I had a session tonight and my players ran into their first Nemesis, an assassin droid out of the book. The upgrades freaked them out and they were trying figure out why this foe was so much harder to hit compared to everything, and honestly I didn't have a good answer.
In hindsight as a droid, I should have just said better plating but it raised a valid question that I need to prepare for.
How do you describe how foes with Adversary are so much harder to hit? Only so many of them will experts of predictive dodging, skillful parrying and armor plated. What about the officers and scientists who just have that touch of plot armor?