Well, for starters the pickups are alot better imo compared to the stock CIJ pickups.
and the setup that Fran did is amazing, low action, no buzzing, stays in tune, strings dont jump out of the saddles either. And that is with the stock Jag bridge(not mustang bridge) and no buzzstop.
In Frans picture it has a buzzstop, but only because it had massive output pickups and picked up string noise from behind the bridge.