Here's how they created this perfect storm.
1.) Make one of the most anticipated games in history, design it so that everyone needs to login to play the game, and do so without a login queue, causing repeated "hits" to the login server.
2.) Spend millions on marketing to produce the largest number of presales in the history of the company. 1.2 million people alone from world of warcraft annual subscriptions.
3.) Release the game with a global start time, rather than letting people trickle in by timezone.
This will make headlines.