Re: HB Neck Pickup Options for a 59/Custom Hybrid
7.8 is a tad higher than the 7.5/7.6 figure we're used to seeing in the vintage output A5 neck group, agreed. If it were comprised of coils using different wire gauges then I'd expect the the output with that DCR to be lower not higher. One coil would have to have a heavier gauge than 42 for there to be a significant enough increase in output to put it in the "high" range (let alone the "medium" range).
Actually, there are ways it could wind comparable to symmetric coils, and possibly louder, without using thicker wire. Wind one coil much hotter, for the other do same number of turns of a thinner wire. With hot coil towards neck, it's probably louder than a symmetrical neck pickup with studs toward bridge. [There are other possibilities, but the most obvious would currently run afoul of unexpired DiMarzio patents, like using extra hidden metal in between the studs to increase inductance.]
Without more data, I'm reluctant to just dismiss it solely as marketing.
I'd be more interested in a Jazz Bridge/'59 Bridge hybrid, if going all-screw. And I'd probably wind up with hex screws all under the wound strings and standard screws under the high strings. I really like fatter high strings and more bite on wound, but tastes vary.
You seem to have something specific in mind with the JazzB/'59n hybrid, so that might be what you want to try.
Oh, and on the higher resistance coils being lower output... not too surprising if 44AWG underwound to 12-13K wasn't as high output as a more coil-filling 42AWG pickup. Assuming that's what's going on with the Perpetual Burn and Pegasus. Again, lack of hard data...