Idk, I think The Exorcist is more terrifying for a parent, but that doesn't make it any less terrifying as a maze. Tbh, outside of the initial shock factor of having the doppels, the whole conceit kinda took a backseat as the movie went along. I think more people remember the scissors and jumpsuits and Hands Across America chain rather than the doppelganger thing, creepy as it was.