Rules Brushup: Tactics vs Granted

Here's an obscure rule that I only really took note of after I'd been playing Warmachine for probably a year. I took note when I was looking at the gun mage officer's card. He had two interesting rules, but the peculiar part is that one was prefaced with Granted, and the other said Tactics. What is the difference between Granted and Tactics?

Back then, the abilities were entirely different (Tactics: True Sight) so let's focus now on the current Mk3 abilities on gun mages. One is Granted: Swift Hunter, and the other one is Tactics: Practiced Maneuvers. The key difference here is that "Granted" is granted only by that model's continued existence. If the officer is killed, the unit loses that ability. "Tactics" remains even if the model is killed. That's really the long and short of it. Simple, but important. Your gun mages won't lose Practiced Maneuvers, but when the officer dies, there goes the Swift Hunter ability.