looks like they xp nerf was unintentional according to Zarhym, and they've now buffed the xp in all BG's

http://forums.worldofwarcraft.com/th...id=1&pageNo=13
Q u o t e:
If you felt AV XP was too powerful compared to other Battlegrounds, maybe you should buff the others???

That's precisely what we've done with this new hotfix.
Q u o t e:
Please just say it: we were leveling too fast and having fun so you sent us back to grinding on boars to move up.

The experience gains in Alterac Valley were not adjusted in patch 3.2.2. The gains were percentage-based according to level brackets. Since the level brackets changed in 3.2.2, the experience gains decreased as a result. Because of this, we've added an across-the-board increase to experience gains in all Battlegrounds to compensate for the adverse affect on Alterac Valley that came as a result of the level bracket changes, as well as make gaining experience in our other Battlegrounds more viable.

and

http://forums.worldofwarcraft.com/th...2907&sid=1#262

Q u o t e:


What exactly was wrong with players leveling through PvP (if that is their fancy). Explain that.
Absolutely nothing. That's why we implemented experience gains in Battlegrounds in the first place. The nerf to experience gains in Alterac Valley in 3.2.2 was not intentional. It was a side effect of the level bracket change. Again, we've applied a hotfix to substantially increase experience gains across the board for all Battlegrounds. Alterac Valley experience gains should now be better than they were immediately following the patch. Experience gains in all other Battlegrounds should now be better than they ever have been.

I was so relieved that I'll be able to skip some of those Northrend collection quests I had to make my first post, although I haven't tested it yet to see how much of a buff it is. Great site btw!