i'm not surprised to see steel on top here. until recently alloy was all but unrideable, IMHO. but my Al frame of reference includes only a ~1990 klein quantum and a late-90s cannondale (w/carbon fork). so it's probably not a fair contest against the steel bikes i've owned, a 1990 sachs and a 1992 scapin el-os.
not to knock modern materials (and material science) though...carbon and carbon/metal 'skeleton' frames are some seriously engineered gear, and lowly old ti still gives a great ride.