Hm.....I'm glad that, here in my country, we always have the option to see it on 2D with cheaper ticket-price. Does the audience in North America really have no choice other than to see it in 3D?
If all sequence has been shot, I don't think the conversion will hurt the movie's 2D format. Just like
Clash of the Titans still looks impressive in 2D after 3D conversion.