60s pickups vs modern pickups

[sodly]

Just out of curiosity, has anyone ever compared specs (towing capacity, cargo capacity, axle weight ratings, etc.) of the 60-66 pickups in relation to a modern Chevy/GMC pickup? I know today's trucks are much more capable than they used to be (relative to their size) but I've never actually quantified it. How would a 1966 C20 stack up against a 2014 2500 Silverado/Sierra? Would a 3/4 ton from the 60s... even with its full-floating rear axle... be closer in ability to a 1500 of today? Have pickups improved/changed that much over the years? I'm not sure since I'm not that up on the newer trucks. Has anyone ever made that comparison? I would be curious to know how things have changed.... or not. Obviously, today's truck are MUCH more powerful than ours ever were. You see pickups nowadays pulling loads that would've required a semi not too many years ago. And brakes are much better. But those two things aside, how do they stack up against each other? Any thoughts?