So my experience with Dark Knight doesn't go far enough back to know anything about its previous iterations, but having played 3/4 of the Tanks for any length of time I'd unfortunately rank it below Warrior and Gunbreaker both in terms of, idk, feel and skillset? Hurts to say because Dark Knight was what I was gunning for basically from the start, so finding it underwhelming was not my ideal outcome...

In terms of feel the animations are lackluster, way too slow and clumsy and lacking impact, especially the basic combo. In comparison I feel like Warrior has the most impact, animations are nice and snappy and the sound effects are quite good, though Gunbreaker is no slouch either (technically cheating, because literal explosions... the womp-womp sound effect feels like a bit of a weird choice though). Both of those also have a lot more going for them in terms of skillset, multiple combos, DOT skills, etc. whereas DRK only really has its basic combo most of the time. It's kind of boring to play...