It'll sell well. It's riding on the back of the franchise hard; we all know anything to do with Alien makes money, regardless of it's quality. People will blind buy it and then get screwed once they realise what they've just bought. Hell, that's what happened to me, and i'm sure the majority of us who pre-ordered it.
Besides, the advertising onslaught of this game has been insane. 3 years full of constant hype, gameplay vids, trailers, and now everywhere I go there's huge billboards up. All the GAME stores here still have posters up all over their windows. People who have no idea about the reviews are just picking it up because, well, Aliens.
But we're all paying for this disappointment, and once the transaction has gone through it doesn't matter to Gearbox/Sega as we've already paid for it. They've taken our money... unless we get a full refund.
But the average/casual gamers and the less-hardcore fans seems to be enjoying the game. Those people who were never caught up in the hype or knew anything about it, are picking it up and having fun with it. It's just what they expect from an Aliens game.
I've spoken to a fair few people over the last week who can't understand why I, and the majority of the gaming community, think the game is awful. They are having fun with it. There's also a few people who lowered their expectations so much after the critical bashing, but ended up enjoying it telling me it's actually not that bad.
I just told their standards are pretty low, and that they deserve better.
But hey, if they enjoy it, then fair play to them. Just wish I did as much as them. But i'm a big fan of the film, and series. And think with this game, big fans got burnt. Hard.