[zbtaylor1]

Agreed. I have two bikes - the notoriously stiff Specialized Allez Sprint (aluminum), and the Cannondale SuperSix (carbon). The carbon bike has wider wheels that allow me to run ~10psi lower than I do on the aluminum bike.

Anecdotally, I can barely tell the difference between the two and the deck is stacked in favor of the carbon bike. Swap the wheels and I'm sure they would feel exactly the same aside from geometry.

[TarpitCarnivore]

Where you will notice it most is in hard cornering and sprinting hard. You'll get more flame flex and feel then with regular riding. Carbon is also wholly dependent on how they shape and layer it for the ride, plus how thick is the aluminum.