Orc

1- 2k stam is a lot
2- Healing on dmg done with weapons is always good, on a class that lacks class spammable (unless you want to throw rocks)
3- extra wpn dmg is useful for sustain sets and 10% extra movement speed on a class that struggless with mobility (is not that bad, but is not the best) is always nice.

Nord

1- Ulti generation is great on a DK, although if you get more ulti than the necessary you will be wasting ulti. 1500 stam is a good amount
2- Max health in 1k is good but without reliable healings could be a waste. Chilled is OK, though there are not so much frost dmg in PvP
3- Extra resistance on a class that has a lot resistance per se could be overkill.


I say Orc this time. Nord is more for a PvE Tank.

Another decent option could be Redguard but you coud be pigeoholed into doing direct dmg.

Nord. My first character was a Nord Stamina DK since I created him, almost 5 years ago, during a free to play week-end, before I actually bought the game. I played him in PvP even before the racial passive chance and enjoyed it quite a lot. The 6% damage reduction allowed me to play 5M2H armor and basically have the same mitigation as 5H2M. More recently they buffed the medium armor and racial passives - more stamina, about the same mitigation (but implemented differently), ultimate generation (which is quite good for both sustain and damage on DK) - so the advantage is even higher. I reckon you can play Nord even on magicka DK and it will be quite good, although mine is a Dark Elf so I don't need to switch attributes on the Nord to play that combo.

1.Nord
2. Orc
3. Anything else

Nord all the way. Go 5m-2H or 5m-1H-1L and enjoy tankiness in medium, resulting in having more stats then any other race can compete with.

Imperial is such a underrated race good stats and 3% cost reduction to everything plus 333 all resources every 5 seconds.