Ratings in US are strange and UK in some ways is a lot more strict (I’ve come to learn). For example, Titanic has a scene of very obvious nudity and is only PG-13, but there have been films like Halloween (2018) where there’s just a couple of frames of it. Maybe 3 moments where there’s I guess a “decent” amount of blood and it’s rated R. I suppose censors look at the “context” I honestly have no clue because I’m just as confused sometimes. Just like Paranormal Activity is rated R but it’s only because the F word is said a small handful of times along with some minor PG-13 cussing.