In Malcolm's Class Tierlist for PvP in Update 39, he goes over the best (and worst) classes to use in The Elder Scrolls Online.
For a more specific breakdown on the factors and reasons behind why each class is what tier you can click here.
| Class | Tier |
| Dragonknight | S |
| Nightblade | S |
| Warden | A |
| Arcanist | A |
| Sorcerer | B |
| Templar | C |
| Necromancer | D |