Last T11 I did as SMN I got ~106 auto-attacks in for a little over 10,000 damage? Considering my positioning, that's 50/50 for Phase 1/3 and only ~6 during adds on the egg. I could probably squeeze more in since I ended the fight with excess MP so I think I could reasonably bump it up to 120 or so total auto-attacks for free.
Our last two T13s I think were a lot worse as it's basically just Phase 1 + every time I stack for mechanics but that's still around 4k damage. At this point, I'm comfortable with the fight enough that I could easily get double that in without really changing anything I do. Realistically, 6-8k is around where I'd feel comfortable on non-training dummy fights like T12, T13.
Our last two T13s I think were a lot worse as it's basically just Phase 1 + every time I stack for mechanics but that's still around 4k damage. At this point, I'm comfortable with the fight enough that I could easily get double that in without really changing anything I do. Realistically, 6-8k is around where I'd feel comfortable on non-training dummy fights like T12, T13.