Not to be pedantic (but I'll go with what I know

), I would describe 1.5" (J) vs 1.75" (P) as narrower rather than thinner. Thinner would be front to back measurement (thickness), and differentiate between regular and baseball bat (C vs D vs U shape).
you're welcome
One comment on the bass - the volume knob looks to be pretty close to the bottom of the pickup. I know with some instruments I've had issues with my right hand whacking the knob when they're too tight with the bottom of the pickup. Lots of variables on that though. I'm a PJ fan so I applaud this model.