I mean... it's a beautiful game with amazing graphics and a great story (except for the ending). But the control mapping and game-play are horrible. Rockstar used the GTA character control system that's about 13 years old now. It works (barely) for the GTA games, but it completely falls apart with the demands this game put on it. I just don't see how so many people can overlook that.
I remember the controls on GTA4 drove me nuts, but I don't think GTA pushed the action as hard as RDR did. When you have to react or move quickly, RDR literally falls over itself. I just don't understand how something that's obviously a major problem makes it into the final game.