Ya, and again BW misses the point. The reason so many people do PVP is because there's literally nothing else to do. It's PVP, grind an alt, or do your once/bi weekly raid. So of course people will opt to do PVP for a while, especially considering how much of a grind it is at 50 to get any gear, so those who want to hope to be competitive will have to grind for a full BM/WH set to stand a chance in PVP.
I'm betting the people aren't as interested in PVP as BW thinks, and probably a good chunk of the ones who left weren't the PVP crowd either.
Indeed, I PvP purely to get gear after hitting 50. Recruit gear is easy to get and is better than Tionese (from what I've seen) and Battlemaster is a faster grind by weeks than Columi gear.