You're  looking at this incorrectly...youre missing the most important part, especially against a Hash.. What's your accuracy? I literally just faced a 281 DK at 345 DP on Sage and he had no problem taking chunks of health with 1 skill. Hash has high evasion passives and coupled with gear, it can be impossible to take down at 301 ap without accuracy.  If you're not at least 320 Sheet Accuracy with Accuracy Crystals like Jin Vipers,  not surprised and this is just the "Average". If it's an Evasion Build you'll need ALOT more then that. It's all too common people play AP monkey using Offin and AP crystals ignoring ine of the most important Stats, Accuracy.  If you were seeing minimal damage on your skills, it's because most of your attacks didn't actually hit. DK is a glass cannon and a DK at 281 with 420+ Accuracy can hit like a truck.

The fact you don't even mention accuracy when facing an evasion based class leads me to suspect you really need to look into the current metas and build accordingly because I just lost 2/5 against a 281/340 DK on Sage at 288/345.

I was about to write down my acc because I knew somebody would ask this. My acc with Nouver is 396, and with Kutum ~410. Yeah I still dont reach 420 acc by ''few'' but Im already working on that. As I said, I just progressed into 281ap. Keep in mind also that dk has accuracy passives and that's why I allow myself a bit more of ap priority. I can two/three tap certain classes but some others are just impossible at the same dp.

I said ''most of classes'', not all. And sage is not a hard target at all, but warriors, valks, guardians, gauntlets... are so hard to kill but still remain with high dmg, also because dk is a twig no matter how much dp you put on her just like ranger or archer.

Also, I think Im not the only one who has complained about Hash being too tanky while having high dmg. Here's a funny thing, if hashashin wasnt hard to play, people would be crying about him 24/7 on the forums instead of succ wiz only, but yeah succ wiz is just too easy to play for an extremely rewarding performance. Hash wayyyyy better than most people think.

Succ Hash is fairly easy to play and deals more DPS then Awakening,  since most of Awakening Hash's abilities are tied to long animations, but still I can see how he can appear tanky without a decent accuracy build double so if they go evasion, which most do, since they have an abundance of evasion passives and skills to stack. Several class can easily eat through Hash np. PA has included and updated class modifiers,  so damage output isn't necessarily the same across the board. Both Succ Hash and Awakening Hash have a hell of a time against Striker and Mystic for example, there's several PVP vids where despite having 10 more AP and DP, a Hash can't one or two combo an Evasion Striker, so trust me, you're not the only one. Accuracy is crucial now, requiring an Accuracy Off-hand and/or accessories plus gems to even have a chance against these builds. I can guarantee you, once you get some more accuracy,  you'll hit hard.  There's plenty of DKs in RBF nuking with the new ability, it just takes more work to get to that level now unfortunately and you'll have to be knowledgeable on the classes you're facing in regards to modifiers and common builds. Succ Hash is deadly, and for DKs a lot of Accuracy (min 420 against Evasion builds) is mandatory.

I don't even run Nouver anymore as I find at 293 w/kutum and accuracy crystals plus Vell and buffs I can deal ok damage against Evasion builds. If you're running a nouver though, I'd consider getting a Turos Belt or new Accuracy neck. That should improve your odds of hits substantially as the meta is a mixed bag of heavy DR or Heavy Evasion. As you mentioned earlier, some classes you do fine against, and it's probably the DR build one's because you've got decent AP, but up against Evasion Builds, you won't one combo because only 25% of your skills hits are hitting and you dont have enough AP to make that 25% kill.

Also, make sure you're using Accuracy buffs and evasion debuff add-ons.  This helps alot too.

I recently reached 305 Nouver wearing accuracy neck, and against some people, still doo doo damage xD pre-buffer accuracy mods on downed target = scattering shadow (magic accuracy) > shadow eruption (accuracy add-on) > shiftX rabam (damage) > C swap Turn Back Slash cancel (- DP and evasion addon) > Grim Reaper's Judgement (big bertha) = 50% HP on some people.  Primarily Gauntlets.

There's some really geared people on our server.  344 DP, though, 281 DK should be able to shred that...I get absolutely blown up by DK's, even those less than 281 AP, but unsure if DK just does great damage to evasion-armor sorc, because it seems every DK I meet has dynamite strapped to their Kriegmesser.

yes pvp is not worth touching these days

Definitly agree just few days ago i fought a pretty much equally geared dk but he was on kutum and i was on my nouver. I had tiny bit more dp aswell (we were both dr) dmg wise if i didnt dodge skills or trade better with fg skills etc i got tapped in sa. Now comes the funny part tho when ccd he would sometimes (if i didnt have my full combo ready cos of sa trading) almost be able to survive, on the other side he would always kill me with 2 skills when i got ccd. I see DK´s often complain but dmg really is none of their problems, hell, the say gauntlets are so tanky but they unirconally do more damage to them than i do on my musa.

dont forget, u also need to have high fps because if u dont.... ;)

Don't worry fam, I have 303AP + RBF cristals w 400acc, and still no damage.

Better reroll if you want to actually worth anything.