I have no doubt the game will ship with some bugs. With modern games, especially ones of this scale it's impossible to playtest everything and find every bug. That said, I have no doubt that the game they ship will work as it should with the exception of the rare bug that slipped through playtesting, rather than the typical Ubisoft games which get shipped in an obviously broken state that couldn't possibly have been missed with even a small group of playtesters working for a single day. If the game ships with SLI working, no obvious flaws, and relatively well optimized then I'll be thrilled. I wish more devs cared about the quality of games they deliver as much as these guys do.
As far as pirates go, I agree that pirates will be pirates and most DRM does little more than delay the release of a pirated version by a couple of days. Truth be told that while I don't pirate my games, if they have forced DRM and I'm not planning on playing online one of the first things I do is look for a crack. I don't see any justifiable reason why a developer or publisher needs to monitor my single-player gaming. I doubt they would give me the same access to their system and network that they expect me to give them to mine. Quite honestly I view most DRM efforts as little more than rootkits and spyware.
I'm not going to preorder their game because I've never really seen a point to preorders, but it will definitely be purchased as soon as it's released. Maybe no the first day, but definitely before the first day I'll have time to play it.