Even though the final report says sustained 190mph winds I extremely doubt it was that strong at landfall.Like I've said before,it is very difficult for storms to keep that kind of intensity even over warm waters,there's no way it's going to keep that intensity till landfall.Remember,this is the north Gulf were talking about,cat 4/5 hurricanes do not like the northern Gulf.Also there was probably land interaction with SE LA that could've caused some weakening.IMO I am convinced Camille was more likely a borderline cat 5/4 at landfall.
Just remember one thing, Camille intensified several hours before landfall, she was not at peak like the other storms were 24hrs prior. If anything, she crossed an area of the LA coast as a 5.