Thalassocrat > Mezraq 50% of the time.
Damage= Basedamage x pDIF
Base Damage = Damage(number on the weapon) + fSTR
fSTR is a function of your str vs the mobs vit, it takes ~4 to raise it's value by 1.
So in cases where the STR+2 on mezraq will raise fSTR by 1 (50% of the time) then Thal == Mez.
in times where it does NOT raise fSTR
Thal > Mez.