There has been lots of discussion on the numbers count for the 40k comp at CTA and as to why it is so low. (lower then 16 I think) Some suggest a lack of advertisement, others say that people aren't so keen anymore (I tend to see it that way) but I'm starting to think that quite a few are indulging to deep into the why. I mean I think the most plain and simple thing is that 40k 6th edt has only been out a few months now and lot of competitive (and even the sem-competitive) people haven't had much time to get to grips with the new rules and its changes ... and there have been a lot of changes!
But I'm just a silly fantasy player, what do I know? :D