A little over a month ago we reported that Warhammer Online had hit the same landmark, and our readers had some interesting comments about how much this landmark really matters. Now is an especially good time to ask that question -- some players might not be buying AoC because of performance and stability issues in the IGN open beta event. It's not a stretch to bring into question the true function of a beta (is it marketing, or technical testing?), as well.
Does it matter? We don't know, but we'll find out soon enough.