I wouldn't be surprised to see Star Trek Into Darkness do more business internationally than domestically, which would be the opposite of Trek 2009. Sequels, particularly 3D sequels, tend to do better outside the US if big budget films from the last few years are anything to go by. That probably played a big part in Paramount pushing for the 3D conversion.
Agreed on all points.
Paramount will certainly want this in the $700m+ super league and the 3D push is probably the key.
If there's a problem in the mix, it's maybe with the film itself.
To this casual viewer, it doesn't seem to be distinguishing itself in any way other than 'it's a Star Trek sequel'.