It is a comparative study. There are significant similarities of which the ground rotor diameter compared to the altitude of the kites (KG carousel) or the flying rotor (Rotating Reel). Values are respectively indicated on the page 14 (KG) and on the page 33 (RR) figure 22.18 on the layer in dark blue when the two rotors are close each other:
Resulting the common barrier is the large diameter of the ground rotor. But the advantages could overcome this.
Let us try to see the differences between the two carousels.
KiteGen implements numerous kites acting indirectly the ground rotor by making figure-eight. Resulting a larger torque and a slower ground ring speed.
Rotating Reel system implements the single flying rotor acting directly the ground rotor. Resulting a lesser torque and a higher ground ring speed.
Advantage for KG carousel: available kites.
Advantage for RR: more simple control.