Every fight in NH has a strong single target component, half of them are pretty much pure single target fights, ppl worry too much about the final DPS number when Sin rogues are doing exactly what they were designed for, wich is deal massive damage to the priority target, any raid who does not appreciate the guy who is last in the meter on Skorpyron but actualy hit the boss for more than everyone else on the team do not know anything about raiding. And no EP/exsang does not outperform AP, specially if you have tier, unless every sim is wrong by a nice margin.