No, it doesn't, really. Conditions and terrain vary.

In general, fitter and more experienced cyclists will employ a higher cadence (and therefore a lower gear) for a given speed. That is not, however, as many will tell you, because it is "more efficient".

Actually, the most efficient cadence in terms of power generated for oxygen burned is around 60. That is why most beginners default to something close to that - it's similar to a typical walking rhythm of about two paces per second. Higher cadences burn more fuel, because irrespective of the force applied there is an energy cost to simply moving one's legs faster. So the faster you pedal, the higher the stress on the cardiovascular system. That, simply in terms of energy consumed, is "inefficient".

However, it does have one very considerable benefit, in that pedalling faster in a lower gear means one is applying less force through each pedal stroke, and therefore stressing the muscles less. And that means one can cruise for longer without one's legs getting tired.

So, the more aerobically fit (that is, those whose systems can deliver more oxygen to their muscles) can afford to be "inefficient" - they have oxygen to burn, and they can be profligate with it in order to spare their legs and go further, faster, at higher cadences.

Which is a long-winded way of saying that higher cadences transfer stress from the joints and muscles to the CV system. If you're in good shape, that's a pretty good idea a lot of the time. And if your cadence is in the 90s, I'd say that it would be reasonable to conclude that you're fairly fit and riding in a way that exploits that.