Why is (insert stat) used for (insert skill) instead of (insert stat #2)?
• Like the above situation, it comes down to diversity. Originally Dexterity was used to determine both piloting and gunnery, and while it certainly made sense, this setup led to Dexterity becoming the only stat that Pilots need worry about, so in the interest of keeping people from being able to focus solely on one stat they now need to keep tab of a couple.