If such a hammerdin tele's on top of you and his light resist isn't above 75% and his defense isn't so high i would say you have a 40-50% chance of killing him. Depends a bit on your gear and luck, because.
1) 75% block to break through
2) your minimum damage is low, your max is very high
3) his defense vs your ar.
If you use a infimerc you can circle around him and drain him a bit with aurapulse until he makes a mistake.
All those leechers in diaruns will most likely die by your pulse.
In diaruns there are mostly casters and if you have more skill then them you can beat mostly any of them. But obviously they have the upperhand if you are equally skilled.