Judging by all of the hype surrounding Guild Wars 2, you’d think that the latest World of Warcraft expansion wouldn’t sell as much as the new subscription-free game. ArenaNet’s sequel hit the 2 million mark in about two and a half weeks. They announced the sales on September 13th, when the game launched the last weekend of August. It was impressive, and it gave people hope that it would actually be a “WoW-killer”. However as the month wore on, rumors of server populations dropping began to fly around and then Blizzard released the fourth WoW expansion on the 25th.

The day after the expansion’s release, rumors of “disappointing” retail sales of 600,000-700,000 copies came out. Blizzard stayed mum for a while and that led people to believe the worst. But now Blizzard announced that in one week, Mists of Pandaria sold 2.7 million copies and subscriber numbers are climbing back up above 10 million:

During the first week of launch, prior to the release in China on October 2, the expansion had already sold through approximately 2.7 million copies and the game’s global player base passed 10 million subscribers, with growth across all major regions.

“With Mists of Pandaria, we set out to expand on the sense of fun and discovery that’s always been at the heart of World of Warcraft — in addition to adding a huge variety of new content and features to the game,” said Mike Morhaime, CEO and cofounder of Blizzard Entertainment. “It’s been gratifying to see the results of all of the work we put into this expansion and to hear all of the positive feedback from players so far.”

That’s more than Guild Wars 2 did in two and a half weeks. So, what’s the next “WoW-killer”?