Why do people say SK's do more DPS than Paladins?

[trees]

Ladies and Gentlemen,
I have a question I was hoping to have answered. I don't mean to defile OP's post with a change of topic, but the information and discussion in this thread seem quite good.
I am returning to p99 after quite the break (never raided). The only two classes I am considering are SK or Pally - I am almost exclusively a solo player - I may get into casual raiding to finish epics etc but nothing super hardcore.
Not targeting specific solo artist kills but what class do you think solo crawls dungeons better (including some lesser names), think Seb, HS, Chardok etc.