There's a lot going on in Act II, including a lot of dynamic scenes. The train wreck in the Taggart Tunnel was probably the best scene; the "Money Speech" by Francisco was decidedly abridged, and came across better in the book, but was passable. There were some scenes that made me chuckle, including protesters that looked remarkably like OWS-era!
All in all, the movie will sit best with those who've read the book, and understand the background. Still, pretty well done, and a good time.
One of the problems I had with the first AS was that the characters seemed much younger than I imagined them, like shallow college kids. And the first Dagny was a wooden-headed sorority girl. But I guess younger is always hotter.