I think the CPK team went the right direction with the MC. It is just noticeable in weight difference when using, but not enough to cause more fatigue. They both bite about the same I would say, or close to, but the LC blade geometry "slices" into the wood like a light saber, the medium chopper uses its weight and more "powers in" to the wood. If that makes sense. Don't get me wrong, the MC is thin behind the edge and is effortless when chopping and slicing into the wood, but for people that have the LC, you know how thin that edge is and how "slicey" it is. In the post with the LC edge deformations I mentioned that my LC has quite a few tiny deformations. My medium chopper has not had one so far(I have not chopped as much with it, or as hard of wood yet, but confident it won't have this problem).
It is different chopping on camera, live or not. haha Just not used to it, but off camera, I would say you are right, they are VERY comparable. The MC is just stout enough to take much more abuse but still perform at the same level. The LC and MC do feel a little different in hand, I will have to pay more attention about that and get back to you guy with a more detailed answer. Maybe after I get home from work in the morning I'll spend some time comparing grips when using.
BTW, just say the MC on the exchange!!! hopefully someone here scored that that will put it to work soon!!