Is retro faster than modern? I rode my 456 yesterday to work for the first time in a while. My M-Trax feels much much quicker than the 456. It felt soft and ponderous compared to the stiff quick feel of the M-Trax. But the angles aren't far off each other so not sure it's down to that. And on road I tend to lock out the forks too.
something like this?
Well, they are both bicycles for a start. Both share the 'technology' of cables and an oily chain. One has bouncy forks and the other has a springy frame. I bet one has mahoosive tyres and 'tother does not.
More upright stance will feel slower, shorter rear stays will make a bike quicker regardless of age depending on materials. Stance (but not Lance) on the older bike is more the the roadie side of things if the stem is the same as the google bike pictured.
Lets all buy brand new Audis and turn up at classic car meets shouting loudly about how great it is compared to the bucket of old bits on display.
Its not really the point is it.
There are people who just enjoy cycling for what it is and no longer care what it is they ride (up to a point) and no longer read the type of magazine that says you are not a real rider unless you have XYZ under you.