Frankly, I think debating about the art is really bloody pointless. As one of you said, I forget who..... it really is all subjective.
You show me a game that supposedly has amazing art.... and I can easily find a pile of people that think it's bloody ugly (and this generally doesnt take any time). Often times, I am one of them.
Not to mention the fact that some simply wont give a fart about it, really.
In my case for this game.... and this isnt just me trying to be nice or something, as that wouldnt even occur to me to do.... I like the art in this game. Oh, it's not PERFECT. Certain specific units definitely look a little off, but.... that's really about my only complaint with the art in this game.
And heck, what I've seen of fiddling around with AI War (still aint had a full go at it though), that game now..... yeah, the art in THAT one, I dont like. Definitely not. But I know that game by it's reputation, and what I really care about is the gameplay, so I still bought it and all of the expansions, and chances are I'll get a lot of time out of it once I get around to having a full run at it.
Art that appeals to the masses helps, sure.... but it's not absolutely necessary (and really, what appeals to the masses tends to be only hyper-big-budget games in 3D with HDR-ultra-super-antialiased-megabloom and other gibberish-sounding graphical "features", so..... yeah). Good games sell, if they are brougt to people's attention in the right way. I think a BIG part of the problem with Valley 2 and SH is that this didn't happen (seriously, nobody in the places I frequent knows what either of them are. And some of those people HAD played the first Valley and enjoyed it, yet still....).
EDIT: WHY does everyone always post in groups when I'm writing up a post of my own? Ninjas, everywhere!