Quote from JaetchQuote from KallizkWell for pvp and fast targets maybe Emerald is better since they die pretty fast when critting
Actually, aside from Sharpshooter DHs, emeralds are not great for PvP because you don't have the luxury of standing in one spot all day to proc your crits. You have to make every hit count, so it's better to use a ruby to deal consistent damage over time.
But for general farming where you get to sustain DPS, the damage averages out for ruby and emerald.
or u can be a barb with 63 base cc, + wrath+op+br = 86% cc with weapon throw. u only need 1-3 attacks to kill someone with a wombo crit