I was insufficiently precise in my description of the differences between early 70s Masis and Colnagos. I'm not a frame builder, and my less-than-ideal understanding of how design affects ride means I'm not qualified to comment on that relationship.
All I can say is: ride an early 70s GC, then ride an early 70s Colnago, both with the same tires and wheels and stem length and tire pressure and gear ratios, and see what sorts of differences you notice.
Charles "what-do-I-know?" Andrews
SoCal