I think we're in the process of seeing the first major financial disaster of this new generation in Stranglehold. Thare are three things that drive sales, I think:
1) Hype and press
2) Great reviews
3) Word of mouth
Heavenly Sword and especially Lair are two recent games that may not sell enormously well because of their good-but-not-great and bad reviews (respectively), but they both have a lot of hype and console exclusives always get some buzz simply for that reason alone.
But thus far, Stranglehold has none of this. It didn't get a lot of hype (comparatively, of course) and it's getting okay to pretty good reviews (75 on metacritic), and is multiplatform, which tends to cut down on the buzz -- unless word of mouth becomes amazingly positive, I think we could be looking at the first major dud of this new, extremely expensive era.
According to Midway, the game cost 25 million+ dollars to produce, which is two and a half times as much as Twilight Princess cost, as an example.
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