[One preliminary note: MOO3 is probably not going to released until after Christmas now.]
[Disclaimer: I myself am not a beta-tester for either MOO3 or GalCiv.]
Hmmm, where to start.....
Okay, to start with, I have to say a few words about MOO3--mostly positive, although not entirely. Some of what I write here is based on stuff from the general forum, as well as impressions gleaned from some semi-private conversations with a few of the beta-testers. So feel free to take my words with as many grains of salt as you're comfortable with.....
First off, Zoomba is right about real-time combat. MOO3 can have up to ***1536*** ships per battle (each side can have a maximum of 12 Task Forces of 64 vessels each) at any given time. If Quicksilver had stuck with the traditional turn-based combat, it would take a ridiculously enourmous amount of time to resolve all but the smallest battles.
And from everything that's been said by the testers, space combat is NOT a click-fest, but rather more like Shogun and/or Medieval: Total War (for those of you who have played either of those games)--battles have a more stately, epic feel to them, rather than the frantic twitchings of Command & Conquer. Combat isn't about who can hit their mouse-button the fastest; it's about tactics, reconnaisance, maneuvering, and adapting you battle plan to deal with the unexpected.
As for the comments about the game looking like a spreadsheet, that's probably even more subject to raw opinion than the combat is, but just about all the beta-testers have said that this game is an absolute blast to play, and I can't imagine any of them saying that if the screens looked as "Excel-ish" as some people think they do. And *every single* person who's managed to tear themselves away from playing the beta for a few minutes to post their impressions has said that whether you're talking about combat, planetary building queues, or what-have-you, the screenshots that have been posted simply do not do justice to how the game looks when it's actually in motion.
That last sentence sort of leads into my next point, which is graphics. Yes, they're using voxels; yes, resolution is locked in at 800x600; no, there's not a true 3D engine; and no, they did not include 3D acceleration support. And *YES*, the majority of people seem to think (including, I suspect, quite a few people over at QS, though probably none of them would admit it openly) that this was a rather gigantic mistake. It was not, however, Quicksilver's decision to make; it was Infogrammes'. So at the very least, don't hold the quality of the graphics (or lack thereof) against QS, because I strongly suspect they would have done them differently, had they had any say in the matter. Having said all that, most of the beta-testers, while admitting the graphics would certainly be obselete were this a first-person shooter, have said they're very satisfactory for a turn-based strategy game--which, after all, is *supposed* to focus more on gameplay than on looks.
[metaphorically catching my breath bbefore continuing on]
Having said all that, however, I do have to say this: I do NOT think that MOO3 is going to "kick GalCiv's ass". Will its sales be somewhat higher than GalCiv's will be? Probably, if only beacuse the MOO franchise has better name recognition. Will it completely destroy GalCiv and all other space empire games out there? Of course not. Whoever quoted the oft-overused "apples and oranges" cliche' is right (sorry whoever you are; I couldn't find the quote offhand). Both games are in the same family, but they're not the same species. They offer different things for different gamer-types; some people will like just the one game or the other, many will like both.
Now yes I will admit, I'm getting MOO3 first, but only because it's (probably) coming out first, and because I know my computer has the system specs to run it. Yet, for all the changes QS has made to MOO3 (most of which I do like), it's still just the newest version of the standard 4x game, offering the usual exploration, resource management, diplomacy, combat, multiplayer capability, etc.
GalCiv is all that, and more. Granted, I'll admit I find the combat model somewhat lacking (sorry Brad, I just don't like things abstracted that much). But when you consider that Stardock has added advanced diplomacy, internal politics, a unique trade system, multi-threaded organic AI, the whole Good/Evil empire bit, the variable events and storylines (which will make for great replayability, by the way!), AND the fact that they'll be updating this game for at least a year after it's released, Galactic Civilizations is going to be **loads** of fun to play. I'm not even a beta-tester, and I can see all that! Of course all beta-testers here are free to dispute me if I'm wrong about that, but I somehow doubt very many will take me up on the offer.
Anyway, that's my (very long-winded) two cents on the subject.