Seagate has moved to #1 as of May 2013. I think the highest-ranked Attackpointers are our friends on Team Tecnu in #5...? Congrats to Canadian/Attackpointer Team Salomon - Running Free for hanging onto #18, even though they haven't raced since the last rankings came out. They're heading to Ecomotion in Brazil in August.
Here are the rankings.
Rob Howard of Sleepmonsters provides some background.
This blog offers good insight into the rankings.
Interesting take on AR in USA/North America in the blog. Did not realize how lucky we were with 24 hour races. It guess we have focused more on 24 hour and shorter races putting us behind in Expedition races. It certainly is different. Also, teams are probably less likely to travel overseas for Expedition races when they have so many local 24's.
New ARWS rankings have come out for December 2015. Not surprisingly, Seagate has moved back into #1 and Columbia has dropped to 2nd.
Congrats to KyleRPeter of Team Adventure Medical Kits (formerly Tecnu members), still ranked 3rd in the world.