This is how much better (or worse) each title is selling now compared to just before the New 52 reboot.
These 14 titles are the only ones that had an ongoing just before the reboot, were initial new 52 titles, and made it to issue #32. I took the most recent 8 issue average sales, and subtracted the average from the 8 issues immediately before the reboot. So Batman’s selling 61,500 more copies a month now than it was before the reboot, and Green Lantern Corps is selling 25,500 less than before.
I assume the drop in both Green Lantern titles is related to Geoff Johns leaving. And I’m thinking Batman and Robin being Grant Morrison’s book before the reboot also explains why it’s the only Bat-book to have gone down. Either that, or the constantly changing title.