I'll probably(maybe?) go with armored and then giant scorpion.
Also, I was thinking about how you said it would overshadow Pulverizer(I thought it might too, at first). Thing is, who uses Pulverizer? Probably the most common use is in rainbows, right? Well, this is too much of one element to be used there.
So the only other group left is those who mix gravity and earth. Well, on one end, those who just splash earth, this would be a much better choice. However, I don't think that's a very big group, since it's rather impractical to splash something that costs four of an off element quanta with just a mark, and having just a few pendulums would make that extra quanta quite unstable. So, yes, that's one group that would use this over Pulverizer, but I think it's fair to say that that group is small. I figure that someone just splashing gravity, won't want to spend this much on PC either, and that only leaves those who split the mix right down the middle. I don't have any idea what they might do. But I think some would go one way, and some would go the other.
Anyway, my point(feel free to dispute it, I'm not exactly an expert), is that this will be dominantly used in places where Pulverizer wouldn't. I.E. mono gravity.
