I really think that the time slot was the real killer here. Last year, ABC made two big pickups right off the bat and they put both of those shows in this time slot and both shows suffered. AMLT was moved to a better slot where I think it got higher ratings than it probably deserved, thanks to being behind one of the highest (maybe THE highest?) rated broadcast show.
WC is not a "Wednesday at 10" kind of show. It's more like, hmm, maybe a "Friday at 8" kind of show. It's unfortunate that ABC was willing to throw it away without really giving it a chance. Even with DVR's/Hulu/on-demand, time slots still matter with broadcast shows, and it seems that ABC doesn't realize that.