IDK; my experiences in AV so far have been long, boring turtles that the Horde more often than not loses. I'm often the only one bothering to do turnins and nobody protects the NPCs that summon the big, awesome shit that made AV feel big and awesome. And when I'm trying to farm Marks of Honor, the fact that it takes so long makes it an active deterrent from queueing up for it on my Horde characters as it takes easily twice as long as the other BGs do, making it an overall loss when I'm farming marks.
When I just want to PvP, though, it's not a terrible choice. I just wish every fight didn't inevitably turn into the Alliance turtling at the bridge.