Honestly I think Ed's tastes changed so often it could be a PAF, and overwound PAF, a Mighty Mite 1300/1400, Dimarzio SD, Duncan custom wound anywere from 12K to the 14.5K that the JB winds were at that time in 1978 and I bet the SH-5 customs were more in the 12-13K range at that time. Ed ripping out pickups from show to show could have been a reality at just about any time of the week during 1978.
I have an old early 80's Duncan Seymourizer II which measures 12.5 K that does VH1 much better that the Duncan Custom because it is more balanced and clanky like a PAF without the extra mids push of a 14K SH-5 Custom yet is still aggressive and has alot of power, it could also be a contender as it was Seymours hot pickup before the Custom came into his lineup, it was there with the JB in the early days of Seymour's shop.
I also had an early 80's Duncan Custom and I just felt if was better at doing harder rock than VH1, due to the added compression and mids emphasis. But as with most pickups they all can sound and feel different from wind to wind really.
Those pickup comparison videos shed alot of light on the attributes of just about every pickup known to exist at the time of the reocrding and live tour in 1978. In the end your ears will lead you to your answer and what you like for those tones.