Bill Condon had one advantage working in his favor from the start as director of both halves of "Breaking Dawn," the final film in "The Twilight Saga," and that is that the nature of a conclusion allows you to do things dramatically that no other story in the series can do.
Catherine Hardwick deserves high praise for the same reason Chris Columbus did on the "Harry Potter" series, because even if their respective films in their respective franchises aren't the best films in those series, they still had to get the whole thing up in the air to start with. They had to find the cast. They had to set the stage. They had to establish a tone and a visual language that every other director in the series then had to react to, and if you're the fourth guy on the series, you're going to benefit from any mistakes other people have made on the earlier films. You'll be able to build from what they've done, and while they're busy feeding the audience exposition or grappling with the inertia of a movie like "Eclipse," where nothing of consequence happens to anyone at any point, if you're making the conclusion, you get to deliver payoffs, and that's always going to be more fun.