I've seen people post about them being a softer binding suited to park and freestlye while vendors are calling them a stiff binding.
We usually shy away from rating our bindings for stiffness. The reason is because if you really want accuracy, you need to rate the base, highback and straps.
In the case of the MC, the base is medium and the highback & straps are medium to stiff.
everything comes down to personal preference. Some of our jibbing team guys like stiff bindings, and some of our guys you would assume would want stiff binders, want soft bindings. Some guys don't care, and will rip on anything they strap into.