I'm on the Super Joy at 163, and it's new to me. I don't know anything about the other ski in question.
I bought it without demoing. I've been surprised. Not sure whether I like it or not. We are getting used to each other, this ski and me.
The Super Joy skis differently from other skis I've owned, probably because it is so light combined with being stiff. It responds quickly and immediately to any little movement I make. That's good, but I sure need to be precise. It grips well, meaning it's quite willing to carve, and that's good. But I miss the dampness of my previous daily drivers (Kastle FX84s).
People say because of its lightness it doesn't offer the stability one needs in heavy chopped up crud, but I haven't run into those conditions yet this season. Do you want to ski cut-up crud with this ski? Then it may not be for you.
I haven't gotten rebound from it yet, and have done what needs to be done to get that rebound while carving on groomers, so there's that. I'm not expecting any "pop." And I usually ski Kastle FX 84s, which have a layer of rubber or something in them to make them damp, so I don't usually get "pop." These SuperJoy's are Not Damp. Not at all. If you are used to the Kastle feel and like it, you may miss that dampness.
Why do some manufacturers think women want light skis? Because it's a drag to carry them from the parking lot? Well, these are lighter, if that matters to you. I figured that if I hauled a pair of skis up Tuckerman Ravine, these would be easier to haul. I'm getting old so that would maybe make that trip more likely. But now that I've skied them, I'm not sure their other characteristics would be appropriate for skiing the conditions I might find up there. Just not sure.
My conclusion? The Super Joy is more like skiing a little Triumph TR-6 (close to the road and fast in response) than a Hummer (like some Atomics I've had in the past, a warrior ski meant to blast through anything) or Mercedes S-class sedan (my FXs are like that, smooth and quiet no matter what I ask them to do).
Note: I love skiing bumps. It skied well in the baby bumps we now have forming on the mountain, and I expect it to ski just as well on bigger ones once they form. If I'm lightening the skis and rotating them to ski a narrow bump line, the lightness may be an advantage on long runs, cutting down on fatigue. And when I was carving (ish) short radius turns on these easy bumps, it did well too.