Depends. To be good worth anything takes skill. I believe that the best snipers take the most skill. Good shotgunners also take skill, because you have to know exactly where your opponent is. However, fusion rifles take more skill that shotguns because not only do you have to know where your opponent is, but you also have to compensate for charge time. A good tip for locating your target is to sit by an edge so that you can see around the corner.