Good luck getting an answer to that!

I don't think either is better. They're different.

Frankly, when I started test riding high-end bikes they were all so much better than what I was riding before that the distinctions between them weren't significant. My decision was driven by my desire to have a bike that would be an all-weather bike that could take bigger tires and fenders if I wanted them, and would also fit me (I'm tall), and that led me down the Ti path and a custom build. If I were buying a nice-weather bike for centuries I'm sure I'd be just as happy with a CF bike.