They are the same shells. The liner is where they differ.
Don't let the soft flex detour you. The boot is fairly soft in a forward flex, but the lateral rigidity is where Kryptons excel.
I'd rather err on the side of stiffness than the opposite. It would be one thing if I spent 75% plus of my day in bumps these days like I once did, but I don't. I'm more an all mountain skier these days and like a certain degree of stiffness to rail turns on groomers when I'm skiing them.
I had the Rampage cranked to the 110 limit and I was bending them over way more than I'm comfortable with. I'm a pretty stout guy though at 5'-8" and 205lbs. Okay I'm a bit fat :lol: My understanding is that the Krypton's lightest setting is 110 and the max is 140? I think that range fits me much better than the Rampage's 80-110