Generally FPS takes two primary types of skills - reaction skills and peripheral awareness. Neither of these are products of stupidity. Intelligence comes from all sorts of various capabilities. A person isn't required to be bad at some to be good at others. A person who is good at quick reactions and being aware of peripheral events instead of tunnel-vision are best at FPS. I'm not very good at FPS, but I don't rationalize based on needing to figure out how I'm superior to everyone.