The fight Thursday was #1 (USS) vs. #2 (TA) on their rankings, and so by their criteria is eligible (but not mandatory, they make curious editorial decisions sometimes) for the magazine title.
New cruiserweight champ Tomasz Adamek and former titlist Steve Cunningham meet the media after their ring war.
From The Ring's site. That and in the newest issue they have a preview showdown for the "Vacant Crusierweight championship"
They recognized it, but somehow versus didn't. I don't know why they didn't.