Not finding DRK squishy at all.

[Tiqa]

Try doing it with the DRK and PLD at the same level. I remember reading somewhere that the disparity in damage reduction might have to do with the way damage and defenses are calculated, essentially causing your defensive stats to depreciate as you level up.

Yeah I read it too, saying that damage calculation for 51-60 was different than 1-50 and that would be the cause of what I saw, and it was bullshit, I asked a friend to come with me (since the pld I used in my report was 50 vs drk 54), she was 51, she ate the dmg from titan with no difference as she were 50, she had same def stat too).

Still I encourage you to test it, and to report it to SE if you see same as I saw... around 20% more dmg to DRK than to PLD or WAR, raw.