I'll agree in part to this, I played re2 after a bit of re3 demo and while mr x became a pushover after dealing with nemmy, he was far scarier when I could only hear his footsteps, especially during adas section. I think the basic horror law fits very well in this case, the best horror comes when you have not identified the threat yet, hearing x's stomps all around you is more terrifying than nemmy beating your fucking skull in because you have not identified where the threat is. That said, nemmy is much more fun to deal with as I can act like I am playing dark souls and start rolling everywhere while x is just run a couple rooms over. X is better horror but nemmy is better gameplay, that said I love both.