I have done tests clone is less dps. but either way my rotations where not good here. main problem was the 8sided mirror. it takes almost a min to clear(i was just spamming because this was like the 8th attempt, I really did think i would make it). So you need to do enough damage in a short time so that you can finish her when the mirror goes down. Also if you don't break her center clones you get frozen when the mirror breaks.
