C-Bombs a bit lower output, less compressed, smoother mids, not quite as bassy, but I've noticed that it maintains/imposes a certain level of low end more consistently than a lot of other BKs. Most of them in fact. For example, I've had a miracle man in
- Epi LP
- Dean Custom (Alder/maple/FR)
- Jackson DX1 (Basswood/Maple/FR)
- Ultra-shitee Hondo, for shitees and giggles
And it sounded massively different in each, from hammering, dense and sort of scooped in the LP to really thin, whispy and ugly in the Hondo. Different flavours of 'bright and crunchy' in the superstrats.
But, with the C-Bomb in the jackson, it was thick and heavy, much thicker and heavier than the MM. Still clear, but no lack of weight behind it. The interesting part - the same C-Bomb in my Legra MDV602, a guitar with rather a lot more low end than the jackson, doesnt actually kick off much more low end when amped. otoh, an aftermath or painkiller (which I've also had in the 602 and DX1; I havent had an MM in the 602) in the 602 sounds at least as bassy as the c-bomb, but much lighter in the jackson, as the MM did (more of an old school thrash sound again; bright and crunchy). You can probably expect it to be thicker and denser sounding than the MM in the less bassy guitar, but the output may not satisfy you if youre used to the 81, its quite a bit less. (probably not the wisest thing to say when I'm trying to sell two C-Bombs :lol:)
Lessons learned (through these examples and dozens of others) you cant really accurately predict how a pickup will interact with a guitar, and, the c-bomb seems to keep a more constant bass response from guitar to guitar, and its quite a bit of bass response.
I dont know about the C-Pig because if memory serves I only ever had it in one guitar (I think....maybe two but if so I dont remember what, or what it sounded like so its useless). I seem to recall that in that guitar (the MDV602, which has quite a lot of big, tight low end, but also a lot of top end chime and definition) the relative low end balance out of it was about the same as an 81 in a pretty damned dark, all-mahogany yamaha SG I had at the time. Massive low end for sure, but I dont know how it responds differently, if it does respond very differently to a brighter/less bassy guitar; if its relatively constant, like the C-Bomb or much more variable like the MM, AM, PK (and A-Bomb, funnily enough).
I would guess that your experience would be similar. That in the polls for the EQ charts on the site, the C-Pig EQ rating was one of the most consistent given (everyone gave either '8' or very close to it), I guess that the bass output of it is quite invariate as well, and will 'override' the guitar to an extent, as the c-bomb does. But I cant confirm or contradict that from personal experience, but it seems very likely.