Until we see any sales figures for this game I'm going to guess that they're just PR-ing it.
That said, it depends what they expected really. They might be advertising it a lot, but I doubt they had more than moderate expectations for this. And even then, it's going to be a legs game rather than a MASSIVE FIRST WEEK game I'd have thought. Which is a problem round these parts, if it doesn't sell crazy numbers first week no-one seems to talk about it again =/
But again, I'll wait and see where it is in this week's 'chartz numbers.