If I was disappointed by anything, it's the fact that I cannot prove any of the other reviewers wrong. Bring Up the Bodies is a flat-out brilliant book. And yes: it may in fact be better than Wolf Hall. My mind is blown, just suggesting that.
What may make Bring Up the Bodies a better book has something to do with the story it tells. Wolf Hall had a lot of introductions, a lot of stage-setting; it told a story that was spread out across decades. Bring Up the Bodies is significantly more focused, in a way that makes it a quicker, more satisfying read. And there's no point denying it: it's also a bit of a juicier, more dramatic story. Who can say no to that? Mantel has also sharpened her writing style: the "he" references to Cromwell in Wolf Hall bordered on confusing, but are presented in a simpler, more accessible way in Bring Up the Bodies (often in the form of "he, Cromwell"). It's a cleaner read that seems determined to prevent Bring Up the Bodies from being mislabeled as "dense" (as its predecessor was so often unfairly dubbed).
So yes. Bring Up the Bodies is a worthy successor to Wolf Hall and a wonderful book in its own right. Now I just need to remember that when the third book in Mantel's trilogy comes out, I should not doubt her ability to complete Cromwell's story in the best possible way. I can hardly wait.