...
That said, I do agree the PJ is a more modern sound, and I feel it is scooped a little bit in the upper mids. I think that's what contributes to that "modern" sound, and also the somewhat sweeter sizzlier slap tone. The P pickup is all about low mid series mode grunt (all "properly wired" P pickups have the coils wired in series mode, which always adds gain and grunt... just try any American Fender J with the S1 switch or Musicman SR5H in series mode). Ballzy rock and roll. P basses and SVT amps. The neck J pickup is a lot more even sounding to my ear... more going on in the upper mids, and not quite as gutsy in the lower mids. The bridge pickups are a wash since they're in the same location... HOWEVER... if you have the previous non-Nordstrand pickup set (or for those who might have a PJ4), that's gonna' add a bit to the scoop too. The newer Nordstrand based HC J5 pickups sound a lot stronger in the mids to me, but the overall blended tone is still gonna' be fairly modern with that same upper mid scoop.
At least IMHO/IME anyway.