DCR may be useful in a limited and general way, comparing like pickups to one another (e.g., DiMarzio tele neck pickups to Cavalier Lions), giving a general impression, but not a definitive indication, of said pickup’s output. Output is most often stated in general terms, not in consistent, measurable terms, other than a scale of 1-10. (The one exception I can think of is DiMarzio, which rates the output of their pickups in millivolts.) EQ ratings are most often given in general terms as well, on a scale of 1-10. Magnet types, and strength is mentioned, and generally is helpful, although there are variables. Other variables like inductance and wire turn count are rarely quantified consistently by manufacturers, and so are of no help to me in terms of identifiable, useful criteria. Conclusion: Pickup selection is a confusing crap shoot. Do your best to research claims, listen to clips and YouTube vids, get recommendations…then just roll the dice. Okay, that’s where my mind is on the process of selecting pickups for a build/swap. You’re welcome to try and change my mind.