My wife and I have watched JJ probably every year for thirty years. I think that it has a perfectly captured sense of story and all the characters are perfectly done. No wasted dialogue, and the whole story is cohesive. For us, it is that more enjoyable knowking that it is based on the story of John Johnston, an actual mountain man also known as "Liver Eating Johnston (maybe it was Johnson?). There are a couple of great books, one a "oral history" titled The Saga of Liver Eating Johnston, and the other the fictitious novel "The MOuntain Man". Both are credited at the end of the movie, and both are great reads, with very close parallels to the movie JJ. Johnston was a real man, as Hugh Glass was, but a bit later in the 1800s. He served with some other withering mountain men in the Civil War, and is buried in a veterans cemetery (at a veterans home where he live his last years) in California, as I remember. I prefer to think "He is up there still....."
I havent seen Revolution since it came out. As I remember it was entertaining, but that was about it. All the British were evil caricatures', and I never figured out how Pacino's character went from being a lowly serf/ tradesman in a coastal colonial city to magically appear at the closing battle as a highly skilled fully kited out rifleman.