I'm with Pete on this, and so are a couple of my housemates.
We all agree that as it's not got favourable reviews on the '360 in the first place, they'll blame lack of sales on piracy while downplaying any poor reviews it gets, even if they do keep track of torrent downloads and it comes out that it doens't get torrented much (% wise, but I suspect total downloads will be bandied about as well).
Which is a bit of a farce, however, it probably does make the game a bit cheaper for them to produce.
I'd be inclined to buy it at £19.99 or £24.99 just in support of DRM free games, so hopefully it's not a bad conversion when it comes to pc land, but I'll wait for reviews.
I really wanted this game to be amazing, Sands of Time was awesome, Warrior Within made me want to grow my fringe and Two Thrones kinda redeemed the series a bit but I got fed up of it after a while... so if this is crap my dreams will lie shattered in a pool of Ubisoft vomit