Dueling Builds?
Mace Shield/Greatsword or Axe Shield/Greatsword on marauder amulet. For prolonged fights 1v1 Hammer/Greatsword falls short since once your Hammer F1 is out you get kited/damaged. Sure you could beat the average guy, but vs competent players it doesnt (unless you wanted to burn all your hammer skills at once and then pop Rampage..). The first weaponsets is definitely worth trying out with shield master trait, it does wonders imo.
I used to be a power ranger, now not sure anymore
Strange, I’ve had the exact opposite experience, OP. Thieves and engis? I find them extremely easy to take down in duels. Mesmers at the moment, however, are a different story. While the build is slightly outdated, try running cele axe/sword bow with runes of the undead. I find this build to be one of the strongest and most underrated for dueling.