I never argued how well or how poorly they did it. I simply pointed out that roshan's comment was inaccurate when he inferred that you can only play BG ONE way since playing it as good or evil yields the same result. That's not the case, as if you're evil, the game "punishes" you big time by having guards attack.
Whether that was properly implemented is irrelevant, since it was just a matter of whether ANYTHING different happens depending on how you play. If roshan's original comment was accurate, then regardless of whether you were good or evil, the guards would react to you the same way.