I think we have the reason why Tom Brevoort has been so crabby on his Tumblr, and that is because the latest numbers are out for the Jeph Loeb NINO Nova series.
Following the much-hyped "Nova #100" issue, NINO Nova #11 has dropped considerably - close to 5000.
November's NINO Nova #10 saw 32,716 - with a half dozen variant covers or so - and now December's #12 dropped to 27,982.
That's a loss of 4,734.
Abnett and Lanning's own Nova #11, featuring Richard Rider, from the 2007 series sold better (with zero promotion) at 28,154.
Bendis' Garbage of the Galaxy dropped as well going from 68,647 (#7) and 63,494 (#8) in October to 57,665 (#9) and 53,527 (#10) in December.
That's a lost off over 15,000 and almost 20,000 for both.
(numbers via Comichron)