Immunity to mind control.

I gave this ability to the archangel, and the ability from the berserker, meaning the goal was to create a unit that cannot be mind-controlled. But here's the thing, the ability that provides protection against mind control (I took it from the titan) doesn't work, but the one from the berserker does. I became curious, maybe this ability is a fiction, meaning an empty ability, like those that supposedly deal area-of-effect damage. Or what's the deal, why can the archangel be mind-controlled?

Added 2 minutes later
Oops, you already found the solution yourself; the second hero had a "Sandro's Cloak," which removes the protection effect. Sorry for the spam.