She's backed up this fairly common viewpoint with some compelling reasons, and I have to admit they make sense to me.
I've played Alliance almost exclusively for 2+ years, and I remember wanting to try and get into some serious PvP, but I also remember getting my spirits crushed, along with any desire to continue running BGs due to the constant losses. I realize that you can't win all the time, but it's hard to continue playing if you don't win one at least once in a while.
Even Alterac Valley, the battleground that Alliance supposedly wins most of the time, is only won in my battlegroup if both sides race. If the Horde plays even a little defense, Alliance loses 9 times out of 10. And with the changes Drysc mentioned recently coming to AV, I wonder if Alliance will have any way to gain honor.