Blizzard's modern online infrastructure and general R&D into all that it entails is really, really, really good and they have the money and peace of mind to ensure that it stays that way. It's not really surprising the loads and quality of matchmaking their servers control.
I'm somewhat worried about FFXIV, not the content, I mean I actually think it's a good idea if they've turned most of the game off, but it really seems like they're having a lot of problems both in tech and even some crucial design elements for a game that's only got a few months to go.
But whatever, as long as it's not buggy and I haven't heard too much from really bad bugs yet.
Incomplete? Ok, it'll come in time and even a barebones launch MMO can hold onto people. Buggy? You are fucked, prepare the life rafts. People do not tolerate buggy in launch MMOs anymore, it has outright *murdered* a few of the last, especially Age of Conan.