It just the same with Lorraine, except it just got more support slot that Lorraine and got more binds of ammo and uses same guns with the Lorraine, and i think it can use Danton's 12" (if im not mistaken it haven't been nerf since it got a bb3 range when they release it years ago)

Provence is a good ship. You can use the Danton 12" guns on it to have the most range you can get. Overall the LeHarve is better. It is faster and carries more ammo with the 12" or use the quad for huge firepower and lose out on speed and range. The advantage Provence has over LeHarve is it's guns have a traditional arrangement and are closer together so it makes aiming a little easier.