I guess today I downloaded a parser and I was quite shocked by things I saw / heard.
I was in Titan HM, I happened to be top by about 20 points at 160 dps, with a BLM at 145ish and our dragoons tailing behind just slightly lower than that.
However I was then told: "-Insert name here- is a summoner who does 350+ it's proven".
So, I went to a level 50 dummy and used my following rotation:
Previous stacked Aetherflow III
Purge / Spur
Ruin x 1000 / refresh dots repeat rotation
The max I hit on the dummy was 225 when I looked back, with an average of about 210/215