I'm not sure man, Dark Knight has been switching places with Paladin back to back certain Savage fights and it still does in this expansion for having the most disgusting Burst I ever seen.
Warrior doesn't work with a lot comps DPS wise, useless with Drg, useless with Sch. Warriors problem is literally Inner Release, it's a short big burst and that's it can't do anything else for 90 seconds, sits there doing 1-2-3 with a random FC falling hardcore on DPS. Dark Knight is able to keep consistent damage flowing through and take complete advantage of Chain from Sch. Comps stall 30 seconds on CDs to link up with Dark Knight certain fights for perfect timing earning cooldowns after down time. Don't be so quick to jump the band wagon, Dark Knight is in a lot of speed kills over Paladin for it's burst potential and fight timings, Paladin has flaws needing 35-36 seconds without interruption on every occasion never to happen in order to beat Dark Knight.