Earlier Jackson pickups get more cred, mostly because they were wound in-house by Jackson. The J80, J90, things like that. Although they were also designed to work with their onboard electronics, as well (gain booster, etc), so they may be a bit weak without those.
The models like you have were outsourced and were really no better than most other stock pickups on other imports of the time. Duncan Designed pickups are better by a mile, IMO.