That FAQ is really confusing.
I think this FAQ is trying to answer 2 different situations:
A) " If my hero can use more than one power per turn, can I use the same power twice?" i.e: "If I have something that allow me to activate 2 powers in a turn, and I have a single copy of a card that grants me a power, can I activate that power twice?" Answer: NO.
B) "What if I have multiple copies of the same power in play?" i.e: "In a normal turn in which I can only activate one power, if I have 2 copies of the same card that grant me a power, can I activate the 2 cards as a single power activation?" Answer: NO.
Why did they combine this two cases in the same FAQ? no clue.
Actually, the printed answer says:
Since you are limited to activating one power per turn, you may thus only activate one of the two instances of the power during your power phase.
So that setence is only related to situation B. At last, this is the only way I can read this FAQ in a way that makes sense for me.
So to ilustrate this with an example, and for other new comers like me which are confused with that FAQ, this how I am going to play this:
I will use the Wraith as the test subject, and specifically her two cards "Infrared Eyepiece" (Equipment, not limited, that grants her a power) and "Utility Belt" (Equipment, limited, that reads "You may use an additional power during your power phase")
1.- If the Wraith has one "Infrared Eyepiece" in play, and no "Utility Belt": she can only activate the power in the "Infrared Eyepiece" once (DUH)
2.- If the Wraith has 2 copies of "Infrared Eyepiece" in play, and no "Utility Belt": she can only activate the power once (one activation in one "infrared Eyepiece" card).
3.- If she has 1 copy of "Infrared Eyepiece" in play, and she has one "Utility Belt" in play: she can only activate the power once (one activation in the only "Infrared Eyepiece" card) (of course, she can activate another additional power from a different card)
4.- If she has 2 copies of "Infrared Eyepiece" in play, and she has one "Utility Belt" in play: she can activate the power twice (one activation for each of the cards) (finally!)
I think this is the general consensus. Of course, @Melonball, if you think the game is too easy, you can do this in a different way… Good luck!
("And yes, Wraith, the example is over, you can pick up your wear and leave. Hum… You don't need to look at me like that. Yes, I will call Legacy the next time I need something like this. Glups")