How many lightsiders would have a reason or motivation to use Force Light on a star system(I would think very few since they take the civilians consideration into account) compared to how many darksiders would use Hatred on a star system(too many to count)? I would think most lightsiders would use Force Light in a few battles and be picky about when they use it so as not to hurt their own comrades...whereas darksiders would "light up" a star system either for fun, to destroy a powerful enemy force, as a frame up, or a panic tactic. Lightsiders tend to be more picky with their force use.