Since Sids killed him in his sleep, we have to say that he is more powerful than Sids junior, and we know what he can do with the force, that requires great knolwedge and power hence he's good in the force.
As for saber skills well Sids uses Niman so we can guess that he taught him that-it's logical, he spent a lot of time practiceing force powers and didn't want to spend as much on saber technique so used a simple form.