I agree they are different, panel stiffness rather than a tube frame like a bike. The point I was trying to make away back was that well-designed carbon fibre should not break and has stood the test of time.
I've lost count of all those early 1990's Look/TVT/Alan frames I've seen on ebay over the last 12 months....they must still be pretty damn solid at the prices they've been going for!
If one genuinely can't notice a tangible performance difference between modern carbon frames and steel retro stuff...I seriously recommend they get in touch with a fitness coach and 'get the miles in' whilst winter is still here!