Originally Posted by merlinextraligh

probelm is your hypothetical leaves out tube diameter, tube thickness, tube shape and butting. If you made all those equal, the TI bike would be way noodly compared to the steel.

closest example I can give is a Waterford built steel frame,and a merlin extralight,both of which I've ridden over 20,000 miles. The geometry is pretty similar. The Steel bike definitely feels crisper, and more rigid and responsive. But the Merlin is more compliant comfortable, and lighter.

However you could get the exact opposite result by manipulating tube shapes, diameters and thickneses. The other confounder is one has a steel fork and the other CF.