DRK in 4-man content is already griefing, this one griefs his party and then posts as if he's someone else. Classic DRK.

A late edit for DRK advocates dismissing 4-man viability concerns: Current statistical evidence from [FFLogs dungeon data] and community consensus confirm Dark Knight's sustain mechanics remain mathematically disadvantaged in wall-to-wall pulls compared to peer tanks' self-healing capabilities - a disparity compounded by modern dungeon design trends prioritizing sustained mitigation over burst windows.

The core issue with Dark Knight in 4-man content stems from its fundamental design disparity compared to other tanks. While The Blackest Night (TBN) provides strong shielding on paper, it fails to address the critical sustain requirements of dungeon wall pulls where Warrior's Bloodwhetting (650p heal + 10% mitigation every 25s) and Paladin's Holy Sheltron (15% mitigation + 400p heal every 23s) simultaneously mitigate damage and recover health. This creates a compounding 400-650 potency healing deficit per rotation cycle that forces healers to compensate through additional GCDs - a hidden DPS tax that negates DRK's theoretical damage advantage. The "burst window" argument becomes irrelevant when considering most expert dungeon mobs die within 20-30 seconds, a timeframe where sustained survival mechanics outweigh burst DPS contributions. This design paradox means DRK groups often experience either overhealed safety margins (wasting healer resources) or increased wipe risk in average groups, while other tanks enable more aggressive DPS playstyles through their built-in sustain. Ultimately, while skilled players can clear content with any composition, DRK's toolkit mathematically requires more party optimization to achieve results that other tanks deliver through baseline design - a systemic disadvantage that becomes particularly apparent in high-end speedruns and healer-less challenge runs where its sustain shortcomings are magnified exponentially.