I didn't watch the movie but I know quite well these characters in this movie since I am a comics fan.
Darkseid is not just a tyrant, he is anti-life a cosmic absolute, it is something bigger than Skeletor. Skeletor is just greedy and wants a throne, Darkseid wants the erasure of everything!
Also, comparing Orion to He man is too much hehehe, Orion is a pure contradiction by itself, born from Darkseid and raised by the Highfather, rage and moral restraint battling inside him! He-man doesn't have all these contradictions in his vein; he is just a superhero.
But yeah, it is a fun interpretation, never thought about that after years of reading DC xD