I'm convinced that some people misinterpret the sensation of road feedback -- the frequency and intensity of bumps and jostles from hitting variations in the road surface -- as part of the sensation of speed. If you're not getting as much road feedback, you must not be going as fast, because every time I go faster on this one particular bike, I get more road feedback. Ergo, if I'm not getting as much road feedback on a different bike, I must not be going as fast.

To be fair, if that sensation of speed is part of what you enjoy about riding, great; go for it.

Since we're not racers, we're not really obligated to try to test things to maximize our speed. We should maximize our enjoyment, whether that's a perception of speed or a perception of comfort.