1. Jack and Fabrazio getting onto the Titanic, but even this might not be quite what happened as Jack could have spared Rose the details about what exactly happened.

2. The entirely process of the Titanic hitting the iceberg and the calculation of the amount of time remaining. This was shot in third person for narrative purposes.

3. The scene when Rose is breaking Jack's cuff with the axe and then escaping onto the deck with the rest of the third class passengers. This is quite obviously shot in Jack's perspective to show initially, just how exhausted Elizabeth was and later, to depict just how unfair and classist the crew was.

Of course, the rich go first and sure, let's let them have space. Let there be 12 passengers on a lifeboat built for 65. Yes, that makes total sense. Why should we save people when we can save the wealthy?

There were, of course, exceptions and they were also depicted, but alas, they were quite few.

4. The deaths of the Captain and Mr. Andrews. For cinematic aesthetic, I think.

That's it. These are the only unbiased parts of the film. The rest, all of it, is in Rose's perspective.

Maybe Jack was in fact the run away child of a rich man, and that's how he knew how to act and how to stand. Who knows? Certainly not Rose. And now, neither do we.