WoW was broken for months after launch. Hell, even more than 2 years after launch they were giving out free playtime because some servers would just go down for days. I think that WoW was just ahead of its time in terms of hardware requirements. The updated servers are much, much better.
Why did you think that? BioWare has been saying since the very start that EGA would be phased and based on the order that you registered your pre-order code. That information is posted everywhere. I'm usually the last guy to defend a big corporation like EA, but they're right this time. It's your own damn fault if you didn't bother to read the pre-order stuff.