Harry potter is loved by all different types of people whilst star wars is quite local in it's white male fanbase
whilst Harry Potter is loved by everyone no matter what.
You can't even deny it. How many shows/movies reference Star Wars? Tons and tons. It's part of the popular vernacular.
All That did a Harry Potter parody and it was mentioned once on The Big Bang Theory and Psych. But sayings from it haven't penetrated the mainstream tongue. It's just still fresh and popular.
And I hate Star Wars. Never watched a single movie. But I know EVERYTHING about it because of the utter saturation. Look how many times Family Guy have done Star Wars.
Darth Vader: Obi-Wan never told you what happened to your father. Luke: He told me enough. He told me you killed him. Darth Vader: No. I am your father. A.K.A. "Luke, I am your father" is basically more iconic than everything from Harry Potter