i dont agree with you, the way I got it at ISPO is: the iron maiden is the new ski for last years recoil and has 121-90-117, while the revival remains the revival with 117-90-117. This means that they are quite similar skis, but the iron maiden has a bit better performance in deeper snow or anything but park in general, while it isn't perfectly symmetrical. So if you're going for park only - revival, otherwise I'd choose the iron maiden.
But I'm not sure thats true, its just how i got it