It should be noted that Ang Lee at the Q&A of the screening I attended made it clear that the film was optimized in several different frame-rates for the various capabilities of the theatrical venues. So while not the 120fps, the 60fps is not just a simple matter of dropping half the frames and...
Unfortunately, I felt it was at best just okay. I rated it a 6/10.
I was fortunate to see it in the CineramaDome in LA at 120fps 3D, and visually it is quite stunning. The presentation certainly helped my rating, so contextualize that as you will.