It might be I have the same combo in my Jackson SL2H. I bought it as a Painkiller set, but obviously the neck humbucker is something else. It reads around 8.3kOhm, has a normal size lighter shade magnet (A5 presumably) and it sounds much like Duncan Jazz. The bridge is definitely Painkiller, at around 15.8kOhm and triple ceramic magnets.
Need more playing and different amps to play through, but so far it seems like a very good combo. I have a Duncan Distortion & Jazz combo in another similar guitar, and they are quite alike actually. The PK is clearer and sounds bigger though.