I'm pretty sure dheim meant that the neck pickup in an A-pig set and the neck pickup in a C-pig are the same, and that the difference between the sets is the magnet in the bridge :) 'course, it doesn't exactly answer the OP's question, but i misread the OP's question in exactly the same way (assuming my interpretation of dheim's post is correct).
absolutely correct!
i have misread the question, i realized it just now! sorry...
so here's my true answer...
NO! they're absolutely not the same pickup! it's less hot, it has better cleans and, as said eric, it's warm, fat and fluid. it retains a lot of bridge's midrange, though. it's an excellent complement to the bridge model, like every BKP. i'm beginning to go for mixed sets just because i've already got calibrated sets and like to experiment a bit, but they're the best way to go.