Yes, that's exactly what I was thinking Eric. For anyone else who's interested in these pickups, Tim explained it like this:
'I think it's certainly a fair assumption that warm and organic = Alnico, however warm doesn't usually equate to tight bass response or pick harmonics. Ceramic will give you the speed in the bass response for a tight, percussive tone as well as easy pick harmonics - that actual wind and wire of the NB lends an overall organic, older school voice that's suitable for a wide range of rock.
Having said that, if you feel the guitar naturally has a bright and percussive response, then you would be fine with Alnico as that would translate into the bottom end too. For reference, both Alnico and ceramic clips were recorded on the same LP so not an overly bright guitar.'
Based on this, it really does have to be a choice as to where my priorities lie. If I want to highlight 'warm and organic', I go with the A-Bomb and if I want to emphasise tight bass and pinched harmonics, then I go ceramic. I think we've already established that both have an aggressive edge and both have a tight bass response, even though the C-Bomb is more so. Equally, from what Tim says, both retain an organic feel to them, even though this is more noticeable on the A-Bomb so it may well be that the difference is relatively marginal in many respects. Now I wouldn't describe my guitar as bright in any way; certainly not compared to my Yamaha Pacifica but equally, there's no way I can see it being as dark as a Les Paul, not with maple, alder and an OFR. It really is 'middy' so I can only assume that both would work equally well and I may end up having to toss a coin unless anyone else has any insight.