Wow, nevermind about 60p, it's sounding now like Cameron is going to shoot Avatar 2/3/4 in the 120p "Showscan Digital" format devised by Trumbull within the last few years. I recall seeing the demo video on youtube. If you take every five frames and blur the first three together while deleting the last two, voila, you've got a 24p version.

Anyway, getting back to The Hobbit, someone once summed up the difference between these movies and the PT pretty well. The Hobbit movies' flaws make you appreciate what worked in LotR even more whereas the PT actively hurts your enjoyment of the OT.