No matter what the speedometer says, a high cadence in a relatively easy gear makes me feel faster than a low cadence in a hard gear, because my legs are moving faster. But as I work to develop better force and improve my pace, get a little stronger, and can spend more time on the big ring, I see a tendency towards a lower cadence.
That isn't surprising, come to think of it. A higher gear is harder to pedal, which naturally slows my cadence. For now, anyhow. One of my current drills is to work at increasing my rpm to 70 or so, when I'm in a gear that brings my cadence down to about 50.
At present that sends my heart rate up to the maximum, something that can also happen in an easy gear with a 100+ cadence. With time I hope I can perform that drill and have my heart rate stay in lower Zone 4. It's good practice for Tour de Cure, especially the hills, when spinning even in my lowest gear has always worn out my legs, and sent my heart rate sky-high.