Not finding DRK squishy at all.

[Reynhart]

Have you tested any of this with a DRK and WAR/PLD of equal level in non-synced content? I ask because I have heard of other instances of people doing synced content and, despite(or perhaps because) being higher level, taking much more damage than normal. Similarly, try a DRK at 50 and the PLD at 53.

Equal level, not yet.
But we checked on overworld monsters, like peistes near Bluefog.

But it seems to us that an higher level, with more defense and elementral resist should always take less damage. I even removed my shield to prevent some invisible bonus that might apply.
But I'll do more test as soon as I can