Your logic is faulty...not only that, but honestly, how many "technical high speed descents" do you or anyone actually ride? Seriously, I'd like to know. You make it sound like people are going to be bombing the DH trails at Whistler with these things. Roads were made for cars--if it's too steep and "technical" for a bike, most cars would be totally fucked over and the road would be useless. I'll eat my words if you perchance live in the Rockies or the Alps or something like that, but I wouldn't trust a carbon braking surface for a descent like that period, regardless of manufacturer.
Come on man. Be realistic...
__________________________
I tweet!