Carbon frames have come along way since the earlier OCLV(TREK) for example. That bike was like a big pillow. My newer Giant Advanced is a lot more responsive. They can manipulate carbon to do pretty much whatever they want. Back a few years ago I worked at a Cervelo dealer. We hade to tongue depressor looking pieces of carbon fiber. One you could bend and not twist at all, the other you could twist but not bend. Pretty cool.