Well you have the strongest against the 2nd strongest in Sadow or Luke and then Kun. Wow this one is a really good one. Sadow and Kun would obviously be a weaker link than Sadow and Kressh who both feared Ragnos. Luke would however be more powerful than Simus.. **** sorry I don't know who wins this, it could go either way.
Honestly if I had to make a logical guess I would say he would stalemate or lose because you have 2 of the most powerful force users the galaxy has ever known in Sadow and Luke, and one of the best in Kun. DN Luke would push this battle to a stalemate or a hard victory but again, it's nearly impossible to tell.