I wouldn’t even bother considering attaque coquile because it only hits once.
Here’s the results of my testing. It’s easy since fencer has no min/max damage so your lines are always constant.
These are the weapons I used:
Venier: http://i.imgur.com/U1nueRa.png
Duelist: http://i.imgur.com/cad6f0x.png
All of these results assume every single line crits which doesn’t happen often. Without critical attacks, the difference becomes even smaller. With nothing in my off hand so i assume the +15% attribute bonus also applied to the pierce skills.
On an element neutral large mob (important distinction). All of these skills I’m using are attributed to level 50 as well.
Duelist loses 290 total damage per attaque composee
Duelist loses 138 total damage per flanconnade
Duelist loses 504 total damage per sept etoiles
Duelist loses 624 total damage per lunge
On a dark large enemy:
Duelist loses 3,804 total damage per lunge
Duelist loses 1,130 total damage per flanconnade
Duelist loses 6,416 total damage per sept etoiles
Duelist loses 1,850 total damage per composee.
But you gain 43 evasion. For me this puts me from 75% evasion with full plate up to the evasion cap (80%). In my opinion that’s worth the damage loss in a decent amount of cases (…mostly not dark enemy cases).
Venier costs 8m clean on my server and nobody lists lizard ambers anymore because I guess they dropped the max price cap or something. So you have to put in a LOT of work to get one of these things.
Duelist costs 10k for the recipe and ~600k for the materials and has a cheaper upgrade cost.
Up to you if that damage is worth what you have to put in.
And a final note for anyone curious, the 43 evasion from duelist is NOT affected by peltasta guardian attribute. It just straight gives 43.