I've played a nailbomb and a c-pig in the same guitar....
If I can cast my mind back, because them being in the guitar was seperated by about 6 months or more, with a painkiller in between, so this wont be complete and may not be 100% accurate (but I have a decent memory for these things
In basswood/maple (dean Z)
The NB is lower gain than the c-pig, obviously, and quite a bit less compressed, it had more midrange girth than the pig, a really gritty, grinding feel - the c-pig is quite a bit smoother. Very dynamic, too. Its got more low mids than the C-pig, and more mids and high mids, but less lows and less highs. The reason I got rid of the NBs so quickly (I had them less than a week) was that the bass is pretty loose on them. One mans loose is anothers sag, and is another stills dynamic, but it lacked the razorblade precision that I want.