Scans_Daily

For X-Factor, I'd imagine it's the fact that, even though their sales are low, they're really stable at the moment, so prepping for another arc of X-Factor stories is probably a safe bet. Likewise Avengers Academy.

Going with that theory, wrapping (as examples) X-23 and Dark Wolverine's books after the current arcs makes sense, as their sales were still sliding down. And Alpha Flight took a big hit after it lost the Fear Itself logo, almost doubling its losses between one month and the next; it's no wonder the status as an ongoing was revoked.