That's not been my experience. Certainly carbon isn't as good at
damping as wood, but it's much closer to wood than it is to aluminum.

It's not that carbon damps better than aluminum, it's just that it's a
hellova lot stronger and lighter.It can stand up to much bigger vibrations
with no ill effects.

Cast aluminum has a very small fatigue strength. If you stress it more than
about 5KPsi, it will eventually fail. and the stuff is heavy so vibrations
have a large force behind them.

Carbon fiber has about 650 KPsi theoretical tensile strength. Even when
viewed in the worst possible light, it still has about 200 KPsi in
compression, (That's right 5 KPsi vs 200 KPsi) and it's much lighter.

So carbon doesn't break as readily as aluminum, but that is not damping,
that's because of a radical strength advantage.