Well I'm not game designer or anything, but I have more fun with the combat in U4 to the point that I remember many of the combat encounter, from the setting, the scenario, enemy placement. For example, I just beat TLL not too long ago, when I go to the TLL thread and people are talking about specific level or puzzle, I can recall my experience when I played through that level or puzzle, even remember how I finish specific encounter and the strategy I used. The're so much more memorable which can only mean a good thing to how much I like the combat and puzzles, the same thing also happened when I played U4 back when its released
in comparison, I barely remember any of the combat encounter in TR. They all felt the same and dont feel like they use their environment as well as Uncharted, the big shootout usually happen in a more linear and directed area where you stay in cover, kill enemies and move on. In the open area, the bow is so powerful that I think most of the encounter in the open area is beaten by stealth, and I dont remember enemy ai is good dealing with stealth attack either.
In uncharted 4, to do stealth you really have to sneak around because you can't stealth kill from distance, when you got spotted, since the level is usually so open, enemies can come from any direction so you have to be aware of surrounding and constantly moving around making the combat really fun imo.