I'm sure I could list a few more parallels between the Space Fantasies, but I only have so much room.

GALACTIC EMPIRE (STAR WARS); PROPHECY HERO FINDS DESTINY ON DESERT PLANET, BUTTS HEADS WITH LOCAL SAND PEOPLE, JOINS REBELLION/ANCIENT RELIGION, "LET'S GO" WHEN PILOTING SHIP AS RITE OF PASSAGE, GIANT WORMS, RECOGNIZABLE MILITARY GEAR; PLANET DESTROYING WEAPONS, "STORMTROOPERS", INTERSTELLAR FLEETS, HUMANO CENTRISM, IMPERIAL GUARD/ARMY & XENOS/YUUZHAN VONG OVERLAPS, WW2 TOTALITARIANISM; CURRENT MONARCHY IS REACTION TO ROBOT UPRISING, ELITE WARRIORS HAVE SWORDS, GALAXY RUN BY DAMN MYSTICS; IMPERIUM OF MANKIND (WARHAMMER); THE IMPERIUM(S) (DUNE); TITLE OF GOD EMPEROR (IMMORTAL VIA TRANSHUMANISM), DISTANT/DECENTRALIZED FEUDALISM, ANTI TECH, LIGHT SPEED REQUIRES MYSTICISM/PSYCHICS, BASED ON OUR GALAXY/FUTURE