Found a link to Blizzard's forums which led to this:

Sure to be removed quickly, because I don't recall a Blizzard employee that has ever referenced another MMORPG on their forums before. They corporately maintain some kind of fog-of-war over that stuff.

It's perfectly sane and reasonable of course, you can't expect people to play their own game much, if at all, but they've got an interest in these kind of games so there has to be an outlet in competing products. There's a bunch of other normal reasons, too many to list really.

Much of the fanboi trash talk seems so silly when (during the trade-shows especially) it's probably usual for the devs, CMs and employeees of these companies to sit down together over coffee to discuss what they have in common. Many of them have worked together in the past, the talent is related and interwoven this way. You can catch competing devs smiling at each other on discussion panels and they're honest smiles at that.

I've always liked Eyonix, even back when Warlocks saw no love and as the Warlock CM rep he was too busy enjoying his Mage. =P

I found the link for this on the AoC forums in a thread with the sensationalist topic "Even Blizzard employees play AOC", right underneath "AoC is the Ralph Nader of MMOs" and right above "Is Funcom Gutlessly Caving In To The Prudes..?" which just goes to prove that regardless of any differences in the games themselves, the general forums are exactly the same.