I was curious and found some more info on five thirty eight.
These are supposed to be the closest to 50/50:
Also, wow. I guess it's not surprising, but men seem to be much louder about their opinions. Movie ratings in general are skewed heavily toward what men think of them due to this:
When you hug onscreen with a guy called Bitch Tits and sob your heart out, I can easily imagine many women are going to be mesmerized by such a strange glimpse into the mysterious male dynamics of it all.
Fight Club may be a lot of things, but it most certainly is NOT a macho, Lawrence Of Arabia or Michael Bay-style testosterone ride.
Similar ratings doesn’t mean good ratings. Fight Club might be controversial overall, with plenty of people either hating it or loving it and having it go over their head or not.
I suspect part of this is that your classic "film buff" is probably significantly overrepresented here, and that that demographic skews male.
That would certainly explain a lot about the two lists. The women's list is much more modern and mainstream popular movies, while the men's list has a lot of classics that I think it's fair to say the average person today is far less likely to have seen. The type of person who watches a lot of old classic and foreign movies is probably likely to be the same kind of person who has a lower than average opinion of most mainstream movies coming out today.