Am I missing something, or are Dark Knights just terrible?

[Malmstrom]

Don't let that fool you, max damage between tanks varies up to 3 or 4% from highest to lowest. Damage isn't a critical factor when picking DRK.

DRK is actually solid as a progression tank due to TBN. Dont know what happens next? TBN and see. You do know and it deals damage to you or co-tank? TBN anyways, chances are it's worthwhile anyways as long as it breaks.

I hate this concept.

"The Blackest Night is only good if it breaks!"

Not breaking is considered bad, regardless of the amount of damage it lets you soak for some reason.

That's dumb.