A Facebook page is different from a Facebook profile in the way it's presented so most likely the messages are made available through different mechanisms. I guess they are suggesting the particular hack didn't directly give the attackers full access to the users' profile pages (including messages) but when it comes to Facebook pages the messages are directly exposed.

With FB and Google getting free passes (as in no penalty that hurts) after this kind of incident I don't see them doing much else beyond the minimal diligence.