The Warpig and Miracle man are 45 awg, the diver is 44 awg. Not sure about the duncan custom being plain enamel, I'm pretty sure I read somewhere it was 43 awg poly.
miracle man is 45
I'm almost sure I've read the warpig is 44 somewhere in this forum (although 45 would make more sense)
but I might be wrong
my point is: dc resistance won't tell you the wire gauge/type
And correspondingly (plus a bunch of other factors; magnet type and size, resonant frequency, overall apparent EQ, including the influence of the guitar) DC doesnt tell you output or how hot youre going to hear the pickup to be.
Oh, +1 to everything philly said; BKs have their own sound, they arent copies of anything else, there are no 'equivelents'.
Everything starts somewhere, as a guide and stepping stone, but BKs lineup have it seems to me evolved down quite an isolated line of descent through Tim building on his own work and development. What the starting point was I couldnt tell you for sure, but I know that Tim has put a lot of time into researching OLD, original PAF design, or rather the best thereof (not all PAFs were created equal! But thats another story...) so that would be a sensible guess, but I cant be sure of it, since I'm not a telepath (I'm just making educated guesses from chats about pickups with Tim).
i.e. BKs are best compared to other BKs ;)
Oh, I think the pig is 44 too, and I know its polysol.