Uncharted 4 is a good movie. But as a video game, depending on what you expect from it, it can be very good or very boring.
It may not reach the same highs as its predecessor but Uncharted 3 is still a great action adventure title worthy of your time.
Uncharted 2 is a great example of an incredible sequel and a phenomenal game.
Uncharted is not a flawless game but it is a great action adventure title and the remaster is by far the definitive way to experience it.