I can concur on the all carbon 'ski feel'. I think poppy, loud, too quick, chatter etc if done wrong. There is sweet spot within the matrix combo of 1) core thickness 2) core type (see pine or fir vs maple or poplar) vs 3) ski width vs 4) how much composite under core vs 5) composite over core. (composite being glass or carbon)
And carbon seems to have an explosive breaking point vs glass will keep bending and the core will fail. One time I laid up a ski that was 'all carbon' on a super thin core as we were striving for ultimate lightweight. First run test ski dude hits a cliff, the ski flexed back and a 6" chunk of carbon top sheet laminate near the tip was over compressed and it sheered of the ski and flew past skiers face and in the next second the tip dove and the core broke downward, hooked in the snow and ripped the whole base clean off! Right under the chairlift lol. Buddy had to one ski it down with other ski in shambles after 1/2 a run.
One time I built a carbon hockey stick by making a core out of blue house insulation foam and wrapped it in carbon, shaped the blade etc. It looked awesome! Took to my Men's league game one night and took a couple shots and liked. Wound back for a real slap shot and the thing snapped in half and the blade end literally somehow launched straight up and bounced around in the high metal girders that span over the small arena and then fell back to the ice. It was funny...
I just built my first long bow ever that was 50% carbon in the composite layup adhered to a maple core, if you could call it that. I have not shot a bow since Cub Scouts 30 years ago , here are first shots...
Started next bow that is only glass but on a pine core so making a clean comparable might be iffy, but I will try