How far back was Alex Ross brought on for the All-New, All-Different Marvel covers? Not knowing much of his process, and the caliber of his work, I've always assumed he was a slower worker. That, and every time I see one of his covers, it's an event.

Anonymous
Alex was brought on after he completed his SECRET WARS covers. But he’s a hard-working and disciplined artist, so he can do a number of different covers in a given month, within reason.