True, from a mechanical stand point archimonde is more punishing damage wise. If you get a bad imp spawn the raid will just wipe lol. At the point that people are getting to these bosses now they are most likely 735+ (I think I was 734 when we started it) which is almost outgearing the content. For manno it's not much of a concern as you do have to watch your DPS if you're pushing to fast, but for archi it simplifies the fight extremely.