Are the 3D screenings being pushed as hard at the expense of the 2D ones in the States as they are in the UK?
Well, considering the film was retitled to be Dredd 3D, I'd say yes.
The Agony Booth
did a good synopsis and review of the Stallone version of Judge Dredd, and a retrospective of the comic book, which I heard a lot about as a kid (I was a huge Anthrax fan), but had never read. He pointed out that America already had their own version of Judge Dredd by 1995 - it was called Robocop! Which makes sense. After walking out of Dredd, I told my girlfriend it reminded me of Robocop.