In actual fact Daleks are really good shots, and tend not to miss since the soft reboot starting with Eccleston. I would presume that those stats would refer to non-Time War era Daleks, as they are not very powerful. Plus the AC will adjusting according to the era of Dalek too.
Also stats would need adjusting whether you are using Tv Who or EU Who - which has some rather incredibly powerful beings that make DnD look like old people.
Thing about Daleks is that their weaponry could easily disintegrate a person, Star Trek or Mandalorian style, but they prefer to inflict pain and suffering on their victims as they die. So this could be demonstrated with medicine so they know how to hurt people.