It's almost impossible (for any of us) to do an apples-to-apples comparison, because there are a huge number of non-frame-material variables: tires, wheels, bars, seatpost, fork, geometry, etc. etc. Some of these factors (e.g. tires) make a far greater difference than frame material. Even if you could isolate the frame material, different materials can be tuned in different ways for different purposes. I therefore don't think it's worth focusing much on the "feel" of different frame materials.