Question: What is Dragoon best at ?

[Alenore]

You'd rather compare Energy Siphon and True Thrust, since there's a 30 difference in potency on FT/Fester, just to make sure ^^
I did try with WHM (Stone II / Phlebotomize, same amount of int/str, but a huge difference in det), and Stone II was hitting harder than phleb, by around 70%. It would then round to the equivalent of 289 potency for a DRG.
Which means a WHM spamming Stone II would do more average damages than a DRG spamming all his combo o/ So there's something else, or equations aren't linear.

A SMN i84 with a i80 weapon fester between 680-720, which is more than an equally geared DRG with FT, so potency isn't the same for magic and physical user. I'll check the combat log next time i'll be playing with a SMN to know how much damage it averages every time.

[ChaozK]

A SMN i84 with a i80 weapon fester between 680-720, which is more than an equally geared DRG with FT, so potency isn't the same for magic and physical user. I'll check the combat log next time i'll be playing with a SMN to know how much damage it averages every time.

The potency is most likely equal, however magic users have significantly higher Weapon Damage. For comparison the high allagan SMN weapon has 77 WD while the DRG weapon has 53 WD.
In return, physical DDs get auto attacks.