Batteroo out-source the Facebook presence to a PR company so there are likely multiple authors and hence styles. It's probably also challenging to convincingly write in first person plural when the content is so vapid, truths must be withheld, and contradictions of earlier over-zealous statements avoided.
This same PR firm (JPR Communications) most likely run twitter, instagram, and all other official channels. Not sure if they were officially associated with the early 'fan' channels too or whether those fans were loose cannons from a different set of batteroo affiliates.