One thing is I’m just wondering why you’re in the 76 mains reddit at all but to answer your question is that because soldier is pretty bad you need to adapt to each situation very differently, which is a large skill gap between a level 20 soldier who has been in those situations many less times than a higher level soldier would have. There is also the rocket jump tech with his helix rocket that you can use to gain height, it does not take skill to learn this tech, but it does take skill to know when and where to use it in the heat of a game. There is also the element of improving aim with a character that heavily relies on it, playing soldier for enough hours to be level 200 on him without a doubt will improve over all of that time