I do think that Titanic is a very fine film in its own right. I get the impression reading some of these comments that the love story went on far too long. It was a terrible disaster, but it was also a human story based around two characters from different backgrounRAB who shared a terrible experience, one surviving, the other did not. That was Cameron exploring the human sideof the disaster.
Now, A Night To Remember which I first saw in 1958 when it first came out, has remained to this day one of my fav British movies. But it was a story based around Second Officer Lightoller played by Kenneth More a very popular actor in his day. Two different versions based around different characters.
Both are classics in my view.