For all practical purposes, yes the ground distance covered by both will be the same. But I still think actually or rather theoretically, the higher airplane will cover lesser corresponding ground distance than the lower airplane. The air distance though will be exactly the same.
Just like BOAC said. A geostationary satellite rotates at a speed of 3.07 km/s to keep a stationary position w.r.t the earth. But the speed of earths rotation is 460 m/s. Which implies if both the sattelite and earth were moving at the same speed (say 460 m/s) the satellite would lag behind the earth in the same given time.