The 'Curious' Poster That Was Never Released

I'm wondering why Paramount decided to use the oddly boring posters of just Brad Pitt and Cate Blanchett's massive heads when they had something like this on their hands. Maybe it was too creepy. Thanks to /Film here is a poster that was never released:

Here is a mock up /Film reader Bruno V did:

Directed by David Fincher, The Curious Case of Benjamin Button hits theaters Christmas Day.