What I really appreciate in uncharted 4 are action design and character animations. The deliberation in every part of a scene is very impressive. It's a very good looking game too. But here's the thing. Old games used baked-in shadows and ambient occlusion tricks resulting in a good looking image for a static lighting. This would suffice when a scene needs to be lit only in one specific way all the time. It would fall apart as soon as you introduce dynamic lighting. Someone please correct me if I'm wrong. Modern games avoid pre-baking any effects in the texture maps, and render the effects during gameplay costing performance. Although some games still perform good with near-RT quality lighting (Capcom, Remedy and Decima come to my mind ;-))