Given Edge's well-documented habit of owning multiples of a guitar make, I wouldn't be shocked if he still has another one of his own.
I agree, it's not very energetic.Bono's voice is spot-on, but there's something off about the whole song thus far live. It's...well, it's not loud enough. Well, I guess that's an incorrect statement. The riff just doesn't hit HARD enough, or at least not as hard as on the album.
Well, I guess I can't really describe it. Just something is off. It's not as powerful as it should be, especially with that vocal performance.
He's used a couple of different guitars on Magnificent sofar. Doesn't mean shit. Now if it's for a song like Streets, most notably on the Cannes performance, then yes it matters. Because of the tremolo bar. It can be achieved by 'shuddering' with the guitar neck on a les paul, but Edge didn't even do that. And during Vertigo of that performance it was very audible there were two guitars playing, that was obviously the album version save for the vocals.
On this case, I don't think he's faking. Just testing out different guitars to decide which one to take on tour.